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11 tháng 6 2017

Dùng những từ gợi ý sau để viết các câu hoàn chỉnh:

1. Famers/ have/ few/ days off/ workers

FARMERS HAVE FEWER DAYS OFF THAN WORKERS.

2. After/ work/ farm/ he often/ clean/ chicken coop/ and/ collect/ eggs

AFTER WORKING ON THE FARM, HE OFTEN CLEANS THE CHICKEN COOP AND COLLECTS EGGS.

3. How many/ public/ vacations/ year/ Vietnamese students/ have?

HOW MANY PUBLIC VACATIONS IN A YEAR DO VIETNAMESE STUDENTS HAVE ?

4. We/ less work/ and/ more money/ spend/ future.

WE WILL DO LESS WORK AND HAVE MORE MONEY TO SPEND IN THE FUTURE.

11 tháng 6 2017

Dùng những từ gợi ý sau để viết các câu hoàn chỉnh:

1. Famers/ have/ few/ days off/ workers

=> Famers have fewer days off than workers

2. After/ work/ farm/ he often/ clean/ chicken coop/ and/ collect/ eggs

=> After working farm, he often cleans chicken coop and collects eggs

3. How many/ public/ vacations/ year/ Vietnamese students/ have?

=> How many public vacations in a year do Vietnamese students have ?

4. We/ less work/ and/ more money/ spend/ future.

=> We are less working and more money is spending for future.

21 tháng 11 2016

1: Farmers/ have/ few/ day off/ workers.

=> Farmers have fewwer day off than workers

2: Nr. Tan usually/ start/ work/ seven a.m/ and finish/ 5 p.m

=> Nr. Tan usually starts work at seven a.m and/finish at 5 p.m

3: We/ often/ go/ countryside/ vacation.

=>We often go to the coutryside on vacation

4 What/ you/ do thanksgiving day?

=> What do you do on thanksgiving day?

5: We/ usally/ have/ party/ home

=> We usually have party at home

 

22 tháng 1 2017

cau 1 thieu s cho day nhe ban loi nho ko van de nhuwng noi banj biet

21 tháng 11 2016

1.We often go to the countryside on vacation.

2.What do you do on Thanksgiving Day?

3.We usually have a party at home.

4.They usually spend time with their families on Christmas Day.

5.After work on the farm, he often cleans the chicken coop and collects the eggs.

6.How many public vacations in the year do Vietnamese students have?

7.We will less work and more money to spend in the future.

 

1 tháng 7 2016

1.we often go to the countryside on vacation.

2. What do you do on Thanksgiving Day?

3. We usually have a party at home.

4. They usually spend time for their families on Christmas Day.

5. After he works in the farm, he often cleans the chicken coop and collects some eggs.

6. Mik đang nghĩ nha

7. We will have less work and more money to spend in the future.

4 tháng 4 2018

1. He/ usually/ start/ work/ six o’clock/ morning/ and/ finish/ noon.
=> He usually starts working at six o'clock in the morning and finishes at noon .

2. Farmers/ have/ little/ time off/ workers.
=> Farmers have less time off than workers

3. We/ often/ go/ country/ vacations.
=> We often go to the country in vacations

4. What/ you/ do/ Thanksgiving Day?
=> What do you do on Thankgiving Day ?

We/ usually/ have/ party/ home.
=>We usually have a party at home

5. She/ will/ travel/ the North/ because/ she/ have/ three-week vacation.
=> She will travel to the North because she has three- week vacation

6. Our working day/ last/ eight hours.
=> Our working day lasts eight hours .

7. How many/ public/ vacations/ year/ Vietnamese students/ have?
=> How many pubic vacations a year do Vietnamese students have ?

8. How many/ hours/ day/ he/ spend/ homework?
=>How many hours a day does he spend for homework ?

- It/ take/ him/ three/ hours/ day.
=>It takes him three hours a day

9. Mai/ often/ help/ mother/ housework/ free time.
=> Mai often helps her mother with the housework in her free time .

10. After/ work/ farm/ he/ always/ clean/ chicken coop/ and/ collect/ eggs.
=> After working on the farm , he always cleans chicken coop and collects eggs

20 tháng 10 2016

1, Our vacation starts in June and last three months

2, Classes start at seven and finish at half past eleven

3, Farmers starts work at six in the morning

4, People think students have an easy life

5, we celebrate New Year on January 1st

6, Do vnese students have more fewer vacations holiday than American ones?

7, Lan has 10 hours to do homework every week

8, There are more girls in my class than her class

Ex 1: Dat cau hoi cho cac tu in dam trong cac cau sau. 1. Mary wants to visit the London Tower this summer. 2. I feel the chicken and collect their eggs at six a.m and at four p.m. 3. My elder brother has a lot of stamps from different countries. 4. I feel very pleased about the food. 5. That farmer works from carly in the morning until late at noon. 6. Their family often travel to Sa Pa in summer. 7. No, Lan is never late for class. 8. No, a farmer has no real vacations. Ex 2: Viet...
Đọc tiếp

Ex 1: Dat cau hoi cho cac tu in dam trong cac cau sau.

1. Mary wants to visit the London Tower this summer.

2. I feel the chicken and collect their eggs at six a.m and at four p.m.

3. My elder brother has a lot of stamps from different countries.

4. I feel very pleased about the food.

5. That farmer works from carly in the morning until late at noon.

6. Their family often travel to Sa Pa in summer.

7. No, Lan is never late for class.

8. No, a farmer has no real vacations.

Ex 2: Viet lai cac cau sau bat dau bang nhung tu goi y sao cho nghia khong doi.

1. Ha Noi has many interesting places.

There are ________________________________________.

2. I have fewer textbooks than my elder brother.

My elder brother has _________________________________.

3. What does your father do ?

What is ___________________________________________?

4. Nam likes Electronics best.

Electronics is ______________________________________.

5. Vietnamese students have fewer vacations than American ones.

American students have ______________________________.

6. Mr. Lam aslo has ten days off for his summer vacation.

Mr. Lam aslo has a ____________________________________.

Ex 3: Dung nhung tu goi y sau de viet cac cau hoan chinh.

1. Farmers / have / few / days off / workers.

2. Mr. Tan usually / start / work / seven a.m / morning / and / finish / 5 p.m.

3. We / often / go / countryside / vacation.
4. What / you / do / Thanksgiving Day ?

5. We / usually / have / party / home.

6. Lan / often / help / mother / housework / free time.

7. They / usually / spend / tiome / families / Christmas Day.

8. After / work / farm / he often / clean / chicken coop / and / collect / eggs.

9. How many / public / vacations / year / Vietnamese students / have ?

10. We / less work / and / more money / spend / future.

GIUP MINH VOI MINH CAN GAP khocroikhocroi

4
2 tháng 11 2017

Ex 1: Dat cau hoi cho cac tu in dam trong cac cau sau.

1. Mary wants to visit the London Tower this summer.

Where does Mary want to visit this summer ?

2. I feel the chicken and collect their eggs at six a.m and at four p.m.

What time do you feed the chicken and collect their eggs ?

3. My elder brother has a lot of stamps from different countries.

Who has a lot of stamps from different countries ?

4. I feel very pleased about the food.

How do you feel about the food ?

5. That farmer works from carly in the morning until late at noon.

How long does the farmer works ?

6. Their family often travel to Sa Pa in summer.

Where do their family often travel to in summer ?

7. No, Lan is never late for class.

Is Lan late for class ?

8. No, a farmer has no real vacations.

Does a farmer have real vacations ?

Ex 2: Viet lai cac cau sau bat dau bang nhung tu goi y sao cho nghia khong doi.

1. Ha Noi has many interesting places.

There are ____________many interesting place in Ha Noi____________________________.

2. I have fewer textbooks than my elder brother.

My elder brother has _____________more textbooks than me____________________.

3. What does your father do ?

What is ___________your father's job________________________________?

4. Nam likes Electronics best.

Electronics is __________________Nam's favorite subject____________________.

5. Vietnamese students have fewer vacations than American ones.

American students have ______________more vacations than VN ones________________.

6. Mr. Lam aslo has ten days off for his summer vacation.

Mr. Lam aslo has a ____________ten - day off summer vacation________________________.

Ex 3: Dung nhung tu goi y sau de viet cac cau hoan chinh.

1. Farmers / have / few / days off / workers.

Farmers have fewer days off than workers.

2. Mr. Tan usually / start / work / seven a.m / morning / and / finish / 5 p.m.

Mrs Tan usually starts working at seven a.m in the morning anh finishes at 5 p.m.

3. We / often / go / countryside / vacation.

We often go to the countryside in the vacation.
4. What / you / do / Thanksgiving Day ?

What do you do in the Thanks giving Day?

5. We / usually / have / party / home.

We usually have parties at home.

6. Lan / often / help / mother / housework / free time.

Lan often helps her mother to do the housework in her free time.

7. They / usually / spend / tiome / families / Christmas Day.

They usually spend time with their families in the Christmas Day.

8. After / work / farm / he often / clean / chicken coop / and / collect / eggs.

After working on the farm, he often cleans the chicken coop anh collects eggs.

9. How many / public / vacations / year / Vietnamese students / have ?

How many public vacations in a year do Vietnamese students have?

10. We / less work / and / more money / spend / future.

We will do less work and have more money to spend in the future.

2 tháng 11 2017

Ex 1: Dat cau hoi cho cac tu in dam trong cac cau sau.

1. Mary wants to visit the London Tower this summer.

=> Where does Mary want to visit this summer?

2. I feed the chicken and collect their eggs at six a.m and at four p.m.

=> What time do you feed the chicken and collect their eggs?

3. My elder brother has a lot of stamps from different countries.

=> Who has a lot of stamps from different countries?

4. I feel very pleased about the food.

=> How do you feel about the food?

5. That farmer works from early in the morning until late at noon.

=> How long does that farmer work?

6. Their family often travel to Sa Pa in summer.

=> Where do their family often travel to in summer?

7. No, Lan is never late for class.

=> Is Lan often late for class?

8. No, a farmer has no real vacations.

=> Does a farmer have any real vacations?

Ex 2: Viet lai cac cau sau bat dau bang nhung tu goi y sao cho nghia khong doi.

1. Ha Noi has many interesting places.

There are ___________________many interesting places in Ha Noi_____________________.

2. I have fewer textbooks than my elder brother.

My elder brother has ________________more textbooks than me_________________.

3. What does your father do ?

What is _____________________your father's job______________________?

4. Nam likes Electronics best.

Electronics is ____________________Nam's favorite subject__________________.

5. Vietnamese students have fewer vacations than American ones.

American students have _______________more vacations than Vietnamese ones_______________.

6. Mr. Lam also has ten days off for his summer vacation.

Mr. Lam also has a _________________ten-day summer vacation___________________.

Ex 3: Dung nhung tu goi y sau de viet cac cau hoan chinh.

1. Farmers / have / few / days off / workers.

=> Farmers have fewer days off than workers.

2. Mr. Tan usually / start / work / seven a.m / morning / and / finish / 5 p.m.

=> Mr. Tan usually starts work at seven a.m in the morning and finishes at 5p.m.

3. We / often / go / countryside / vacation.

=> We often go to the countryside on vacation.
4. What / you / do / Thanksgiving Day ?

=> What do you do on Thanksgiving Day?

5. We / usually / have / party / home.

=> We usually have a party at home.

6. Lan / often / help / mother / housework / free time.

=> Lan often helps her mother with the housework in her free time.

7. They / usually / spend / tiome / families / Christmas Day.

=> They usually spend time with their families on Christmas Day.

8. After / work / farm / he often / clean / chicken coop / and / collect / eggs.

=> After working on the farm, he often cleans the chicken coop and collect the eggs.

9. How many / public / vacations / year / Vietnamese students / have ?

=> How many public vacations a year do Vietnamese students have?

10. We / less work / and / more money / spend / future.

=> We will do less work and have more money to spend in the future.

1. These racks/left/magazines/and/those racks/right/newspapers. .............................................................................................. 2. Where/I/find/reference book/readers? ................................................................................................ 3. I/learn/play/guitar/with/friends/the moments. ................................................................................................ 4. Students/learn/how/use/computer/Computer Science...
Đọc tiếp

1. These racks/left/magazines/and/those racks/right/newspapers.

..............................................................................................

2. Where/I/find/reference book/readers?

................................................................................................

3. I/learn/play/guitar/with/friends/the moments.

................................................................................................

4. Students/learn/how/use/computer/Computer Science class.

..................................................................................................

5. Students/take part/different activities/recess.

......................................................................................................

6. We/often/do/experiments/Physics class

.....................................................................................................

7. We/learn/past events/ Viet Nam/before 1945.

.................................................................................................

8. Our vacation/start/June/and/last/three moths.

.......................................................................................................

9. People/think/students/have/more/fewer/vacation/American one?

........................................................................................................

10. People/think/students/have/easy life.

.............................................................................................................

11. We/celebrate/New Year/January 1st.

..........................................................................................................

12. Dear John,

I/please/that/you/your family/well.

........................................................

Here/photo/my family/my parents/sister Hong/me.

...............................................................

Let/tell/you/my/family.

.........................................................

Father/mechanic/and/works/factory.

.............................................................

He/work/five days/week/about 40 hours.

...................................................................

In/free time/he/often/play basketball

......................................................................

Mother/teacher/primary school/near/house.

........................................................................

She/go/school/morning/and/free/afternoon

............................................................

So she/have/lot/time/take care/house/look after/us.

...............................................................

sister Hong/16/and/she/grade 11.

..................................................................

she/very good/Math/and/English/

...........................................................................

Please/wrie/me/soon/and/tell/more/your family.

..................................................................

Best wishes,

Nam

13.Farmers/have/few/days off/workers.

................................................................

14. Mr. Tan usually/start/work/seven a.m/morning/and/finish/5 p.m

............................................................................

15. What/you/do/Thanksgiving Day?

.....................................................................

16. We/usually/have/party/home

..............................................................

17. They/usually/spend/time/families/Chrismast Day.

..............................................................................

18. After/work/farm/he/often/clean/chicken coop/and/collect/eggs.

..................................................................................

19. How many/pulic/vacations/year/Vietnamese students/have?

..............................................................................................

20. We/less work/and/more money/spend/future.

...........................................................................................

2
4 tháng 1 2018

1. These racks/left/magazines/and/those racks/right/newspapers.

these racks on the left have magazines and those racks on the right have newspapers

2. Where/I/find/reference book/readers?

where can i find reference book for readers?

3. I/learn/play/guitar/with/friends/the moments.

i am learning to play the guitar with my friends at the moment

4. Students/learn/how/use/computer/Computer Science class.

students learn how to use a computer in the computer science class

5. Students/take part/different activities/recess.

students take part in many different activities at recess

6. We/often/do/experiments/Physics class

we often do experiments in physics class

7. We/learn/past events/ Viet Nam/before 1945.

we learn about past events of viet nam before 1945

8. Our vacation/start/June/and/last/three moths.

our vacation starts in june and lasts for three months

9. People/think/students/have/more/fewer/vacation/American one?

do people think students have more or fewer vacation than American one?

10. People/think/students/have/easy life.

people think students have an easy life

11. We/celebrate/New Year/January 1st.

we celebrate the new year on january 1st

12. Dear John,

I/please/that/you/your family/well.

i am pleased that you and your family are well

Here/photo/my family/my parents/sister Hong/me.

here is a photo of my family: my parents, my sister Hong and me

Let/tell/you/my/family.

let me tell you about my family

Father/mechanic/and/works/factory.

my father is a mechanic and he works in a factory

He/work/five days/week/about 40 hours.

he works five days a week for about 40 hours

In/free time/he/often/play basketball

in his free time, he often plays basketball

Mother/teacher/primary school/near/house.

my mother is a teacher at a primary school near our house

She/go/school/morning/and/free/afternoon

she goes to school in the morning and she is free in the afternoon

So she/have/lot/time/take care/house/look after/us.

so she has a lot of time to take care of ourr house and look after us

sister Hong/16/and/she/grade 11.

my sister hong is 16 years old and she is in grade 11

she/very good/Math/and/English/

she is very good at math and english

Please/wrie/me/soon/and/tell/more/your family.

please write to me soon and tell me more about your family

Best wishes,

Nam

13.Farmers/have/few/days off/workers.

farmers have fewer days off than workers

14. Mr. Tan usually/start/work/seven a.m/morning/and/finish/5 p.m

mr tan usually starts to work at seven a.m in the morning and finishes at 5p.m

15. What/you/do/Thanksgiving Day?

what do you do on the thanksgiving day?

16. We/usually/have/party/home

we usually have parties at home

17. They/usually/spend/time/families/Chrismast Day.

they usually spend time with their families on Christmas Day

18. After/work/farm/he/often/clean/chicken coop/and/collect/eggs.

after working on the farm, he often cleans the chicken coop and collect some eggs

19. How many/pulic/vacations/year/Vietnamese students/have?

how many public vacations do Vietnamese students have in a year?

20. We/less work/and/more money/spend/future.

we will do less work and spend more money in the future

4 tháng 1 2018

1. These racks/left/magazines/and/those racks/right/newspapers.

............. These racks on the left have magazines and thoses rack on the right have newspapers. .............

2. Where/I/find/reference book/readers?

..........Where can i find many kinds of books : readers, referance books ? ...............

3. I/learn/play/guitar/with/friends/the moments.

..............I am learning to play the guitar with my friends at the moments.........

4. Students/learn/how/use/computer/Computer Science class.

...........The students learn how to use the computer at Computer Science class............

5. Students/take part/different activities/recess.

..........The students take part in many different activities at recess ......

6. We/often/do/experiments/Physics class

........We often do many experiments at Physics class...........

7. We/learn/past events/ Viet Nam/before 1945.

............We learned about past events in Vietnam before 1945.............

8. Our vacation/start/June/and/last/three moths.

...........Our vacation starts in June and lasts three months..........

9. People/think/students/have/more/fewer/vacation/American one?

............People think do students have more or fewer vacation than America one?......

10. People/think/students/have/easy life.

........People think students have easy life...........

11. We/celebrate/New Year/January 1st.

.........We celebrate New Year on January 1st............

12. Dear John,

I/please/that/you/your family/well.

.....................I am pleased that you and your family are well...................................

Here/photo/my family/my parents/sister Hong/me.

...................here is a photo of my family: my parents, my sister Hong and me...........................................

Let/tell/you/my/family.

..................Let me tell you about my family.......................................

Father/mechanic/and/works/factory.

........My father is a mechanic and he works in a factory ..................

He/work/five days/week/about 40 hours.

...........He works five days a week and about 40 hours..............

In/free time/he/often/play basketball

...................In his free time, he often playss basketball...................................................

Mother/teacher/primary school/near/house.

.......................My mother is a teacher in a primary school near my house .................................................

She/go/school/morning/and/free/afternoon

........................She goes to school in the morning and she is free in the afternoon ....................................

So she/have/lot/time/take care/house/look after/us.

.......................So she has a ot of time to take care of my house and look after us........................................

sister Hong/16/and/she/grade 11.

.............My sister Hong is 16 and she is in grade 11................

she/very good/Math/and/English/

..........She is very good at math and english ............

Please/wrie/me/soon/and/tell/more/your family.

................Please write to me soon and tell me more about your family ..............................

Best wishes,

Nam

13.Farmers/have/few/days off/workers.

.............Farmers have fewer days off than workers...............

14. Mr. Tan usually/start/work/seven a.m/morning/and/finish/5 p.m

........Mr Tan usually starts to work at seven a.m ........

15. What/you/do/Thanksgiving Day?

..........What do you do at Thanksgiving Day?...........

16. We/usually/have/party/home

..............We usually have a party at home................................................

17. They/usually/spend/time/families/Chrismast Day.

..............They usually spend their time on families at Christmas Day ......................

18. After/work/farm/he/often/clean/chicken coop/and/collect/eggs.

...........After working on the farm, he often cleans the chicken coop and collects the eggs ............

19. How many/pulic/vacations/year/Vietnamese students/have?

..............How many public vacations a year do Vietnamese students have?............

20. We/less work/and/more money/spend/future.

..........We will have less work and more money to spend in the future .............

20 tháng 7 2017

Sắp xếp:

1.works/near/my/supermarket/part-time/sister/house/in/a/our.

=>My sister works part-time in a supermarket near our house.

2.stamps/overseas/to buy/for/would/mail/some/like.

=>I would like to buy some stamps for overseas mail.( add I)

Dùng từ gợi ý để viết thành câu hoàn chỉnh:

1.After /work/farm/he often/clean/chicken coop/and/collect/eggs.

=>After working on the farm,he often cleans the chiken coop and collects eggs.

2.So she/have/lot/time/take care/housr/look after/us.

=>So she has a lot of time to take care of hours to look fater us.

20 tháng 7 2017

1. My sister works in a part-time supermarket near our house.

2. I would like to buy some stamps for overseas mail

1. After work on his farm, he often clean chicken coop and collect its eggs

2. She has a lot of time takes care house and looks after us

V. Đặt câu hỏi cho các từ gạch dưới trong các câu sau.1. Our class starts at 7 o’clock.=> _____________________________________________________________________________2. Hoa works 20 hours a week.=> _____________________________________________________________________________3. Hoa is definitely not lazy because she works about 45 hours a week.=> _____________________________________________________________________________4. Tim’s father gets about seven public holidays each...
Đọc tiếp

V. Đặt câu hỏi cho các từ gạch dưới trong các câu sau.
1. Our class starts at 7 o’clock.
=> _____________________________________________________________________________
2. Hoa works 20 hours a week.
=> _____________________________________________________________________________
3. Hoa is definitely not lazy because she works about 45 hours a week.
=> _____________________________________________________________________________
4. Tim’s father gets about seven public holidays each year.
=> _____________________________________________________________________________
5. We will visit Tim during the summer vacation.
=> _____________________________________________________________________________
6. Farmers work very hard.
=> _____________________________________________________________________________
7. After breakfast he feeds the buffalo, pigs and chickens.
=> _____________________________________________________________________________
8. When there is less work, Mr. Tuan takes a day off.
=> _____________________________________________________________________________
9. The summer vacation lasts about two months.
=> _____________________________________________________________________________
10. They often go to the countryside on vacation.
=> _____________________________________________________________________________
Dùng những từ gợi ý sau để viết các câu hoàn chỉnh.
1. Our vacation/ start/ June/ and/ last/ three months.
=> _____________________________________________________________________________
2. Classes/ start/ seven/ finish/ half past eleven.
=> _____________________________________________________________________________
3. Farmers start/ work/ six/ morning.
=> _____________________________________________________________________________
4. People/ think/ students/ have/ easy/ life.
=> _____________________________________________________________________________
5. We/celebrate/New Year/ January 1st.
=> _____________________________________________________________________________
6. Vietnamese students/ have/ more/ fewer/ vacations/ American ones?
=> _____________________________________________________________________________
7. Lan/ have/ 10 hours/homework/ every week.
=> _____________________________________________________________________________
8. There/ more/ girls/ my class/ than/ her class.
=> _____________________________________________________________________________
B. THE WORKER
I. Điền vào chỗ trống với từ thích họp trong khung.
crop
vacation
feeds
volunteers

more
parents
collect
mechanic

1. My sister helps my father to ___________ the eggs.
2. Mr. Hung 
1
29 tháng 12 2016

bài trên đâu có chỗ gạch chân

18 tháng 8 2016

 

Farmers have no ( really / real / reality ) vacations
When there is (few / less / more ) work, her father often goes to the movies.
In the future, ( animals / machines / people ) will do all the work for people
The buffalo live in the ( cage / shed / coop)
The hends and cocks live in the (shed / coop / cage)
We have a ( three – months / three – month / three month) summer vacations.
Farmers have fewer ( days / time / date ) off than workers.
Their family often goes to the seaside ( in /at /on) vacations.
Students have to ( do / review / learn ) their work before tests.
Hoa will see her parents ( on / at / in )their farm.
She likes (helps / help / helping ) her parents with the farm work.
Farmers have to work (hard / hardly / harder ) all day long.
Hoa’s friend is interested ( on / in / for ) writing letter.
These students are very keen ( in / at / on) sports
The mechanic repairs ( things / machines / funiture ) in a factory.

 

18 tháng 8 2016

1. Farmers have no ( really / real / reality ) vacations
 

2. When there is (few / less / more ) work, her father often goes to the movies.
 

3. In the future, ( animals / machines / people ) will do all the work for people
 

4. The buffalo live in the ( cage / shed / coop)
 

5. The hends and cocks live in the (shed / coop / cage)
 

6. We have a ( three – months / three – month / three month) summer vacations.
 

7. Farmers have fewer ( days / time / date ) off than workers.
 

8. Their family often goes to the seaside ( in /at /on) vacations.
 

9. Students have to ( do / review / learn ) their work before tests.
 

10. Hoa will see her parents ( on / at / in )their farm.
 

11. She likes (helps / help / helping ) her parents with the farm work.
 

12. Farmers have to work (hard / hardly / harder ) all day long.
 

13. Hoa’s friend is interested ( on / in / for ) writing letter.
 

14. These students are very keen ( in / at / on) sports
 

15. The mechanic repairs ( things / machines / funiture ) in a factory.