Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
CHỦ ĐỀ 5 : CONDITIONAL SENTENCES
Choose the best answer
1. If you pass your examination we _____________ a celebration.
A. have B. will have C. would have had D. would have
2. If I had time, I _____ to the beach with you this weekend.
A. will go B. will have gone C. would go D. would have gone
3. If she_________ late again, she'll lose her job.
A. came B. comes C. had come D. come
4. If I had enough money, _____ that house.
A. I am buy B. I could buy C. I can buy D. I will buy
5. If you had told me earlier, I _____________ it to you.
A. would give B. will give C. would have given D. gave
6. If it ____________, I will come to see you.
A. didn't rain B. doesn't rain C. don't rain D. not rain
7. I __________to work if I had a car.
A. drove B. will drive C. would drive D. would have driven
8. If he ___________to me, he wouldn't have failed in the exams.
A. had listened B. has listened C. listens D. listened
9. Had he come earlier, he __________her.
A. would meet B. would have met C. might meet D. will meet
10. If I were you, I _________ a new car.
A. buy B. will buy C. would buy D. bought
Choose the best answer to complete each of the following sentences.
1. You _____ much recently.
A. weren’t studying B. don’t study C. haven’t been studying D. didn’t study
2. “Where’s Tony?” “He _____ to the travel agent’s, and he hasn’t come back.”
A. has been B. has been going C. has gone D. had gone
3. I’m sorry, but the director _____ the office.
A. already left B. has left C. had left D. is leaving
4. For several years his ambition _____ to become a pilot.
A. is B. has been C. was . D. had been
5. She said she met you once at the Hilton last year. _____ since then?
A. Have you met her B. Did you meet her C. Were you met her D. Had you met her
6. We think they _____ all that is necessary.
A. have done B. doing C. had done D. would do
7. I _____ here since last September.
A. am studying B. have been studying C. had been studying D. was studying
8. I think I _____ my door key. I can’t find it anywhere.
A. lost B. am losing C. have lost D. will lose
9. Mr. Kdwards _____ history for 35 years, and is retiring soon.
A. teaches B. is teaching C. taught D. has been teaching
10. I’d like to see that football match because I _____ one this year.
A. don’t see B. can’t see C. hardly see D. haven’t seen
11. Once an animal _____ from the wild, it generally cannot be returned to its place of origin for fear of disease.
A. was taken s B. will be taken C. would be taken D. has been taken
12. I’m tired. I _____ the house since 9 this morning.
A. am cleaning B. was cleaning C. had been cleaning D. have been cleaning
13. I _____ to your excuses carefully, but I _____.
A. listen - do not convince
B. am listening - was not convinced
C. had listened - have not been convinced
D. have listened - am not convinced
14. I _____ (Có thừa ko bạn nhỉ? 
) can’t believe that you _____ all the three exercises. You just started five minutes ago.
A. have finished B. have been finishing C. finished D. are finishing
15. Up to now, the discount _____ to children under ten years old.
A. has only applied B. only applies C. was only applied D. only applied
16. Tom often watches TV after his parents _____ to bed.
A. had gone B. have gone C. go D. went
17. This is the third time James _____ the volunteer program to the village.
A. joins B. joined C. has joined D. has been joining
18. “How’s Peter doing?” “I don’t know. I _____ from him for months.”
A. have to hear B. haven’t heard C. didn’t hear D. don’t hear
19. “Susan is still looking for a decent flat.” “How long _____ for?” .
A. was she looking B. is she looking C. had she looked D. has she been looking
20. “Has Tim come to terms with his exam results?” “Yes. He _____ the fact he’ll have to reset.”
A. had accepted B. has been accepting C. accepted D. has accepted
21. “How do you like your sushi?” “Well, it’s really different. It’s the first time I _____ Japanese food.”
A. eat B. am eating C. have eaten D. have been eating
22. Their children _____ lots of new friends since they _____ to that town.
A. have made - moved
B. were making - have moved
C. made - are moving
D. made - have been moving
23. It has been a good year. I _____ two books and several short stories, all of which are now in print.
A. have written B. have been writing C. will have written D. had written
24. You should know that everyone in this office _____ busily planning the dance for a week.
A. is B. has been C. have been D. are
25. Jane is a wonderful singer. Her mother tells me that she _____ professionally since she was four.
A. has been sung B. was singing C. is singing D. has been singing
26. That the committee members could not agree with each other about solving that problem _____ caused a serious problem.
A. is B. was C. has D. have
27. Prices _____ considerably since this time last year.
A. have raised B. rose C. raised D. have risen
28. The number of working women in China _____ from 49% in 1980 to nearly 65% today.
A. has been increasing B. has increased C. is increasing D. have increased
29. She _____ two miles and a half, and now she feels exhausted.
A. runs B. was running C. has run D. has been running
30. Something tells me that you _____ to a single word I _____ in the past ten minutes.
A. haven’t been listening - have said
B. haven’t listened - had said
C. hadn’t listened - said
D. didn’t listen - was saying
31. How many of those chocolates _____ today?
A. did you eat B. do you eat C. had you eaten D. have you eaten
32. This is the latest news from Timbuktu. Two-thirds of the city _____ in a fire.
A. has been destroyed B. were destroyed C. was destroyed D. have been destroyed
33. Our industrial output _____from 2 million in 2011 to 2 million in 2011 to 4 million this year.
A. rises B. rose C. was rising D. has risen
34. The replacement of shops such as the groceries’ and chemist’s by cafes _____ the housewives with insufficient facilities for shopping.
A. leave B. have left C. has left D. to have left
35. He_____ (Thiếu chỗ trống rùi nè ) off alone a month ago, and _____ of since.
A. set - hasn’t been heard
B. setted - hasn’t heard
C. set - hasn’t heard
D. setted - hadn’t been heard
36. .You looked tired. _____ hard all day?
A. Have you been working B. Did you work C. Do you work D. Are you working
37. Thousands of antibiotics _____, but only about thirty are in common use today.
A. have developed B. are developing C. have been developed D. have been developing
38. None of the students _____ to class yet.
A. are coming B. hadn’t come C. haven’t come D. have come
39. We _____ for three hours and are very tired.
A. are walking B. have been walking C. were walking D. had been walking
40. I _____ badminton before. This is the first time I _____ to play it.
A. have never played - tried
B. have ever played - have tried
C. have played - have tried
D. have never played - have tried
41. “Are you learning your lesson?” “No, I _____ it.”
A. finished B. finish C. have finished D. have been finished
42. lie is tired how. He _____ for a long time.
A. has been learning B. learns C. has been learned D. learned
43. Listen, Donna, I don’t care if you _____ the bus this morning. You _____ late for work too many times. You are fired!
A. have missed have been B. missed - have been C. missed -- were D. were missing - were
44. “Joseph’s English _____, isn’t it?” - “Yes. He _____ American television programs everyday since he first arrived in San Diego. Soon he will be totally fluent.”
A. is really improving - has been watching
B. has really improved - has watched
C. really improved - watches
D. is really improving - watches
45. For the last ten years, engineers _____ noise levels in Britain’s cities.
A. have been measured . have been measuring C. has measured D. have been measurement
Choose the best answer to complete each of the following sentences.
1. He _____ playing with his dog.
A. is loving B. loves C. was loving D. love
Thì Hiện Tại Đơn
2. Oil _____ if you pour it on water.
A. floated B. floats C. will be floated D. float
Câu điều kiện loại 0
3. Water _____ at 100 degrees Celsius.
A. boils B. boiling C. is boiling D. boil
Thì Hiện Tại đơn
4. The launch of the first liquid-fuelled rocket in 1926 _____ by flight historians _____ as significant as the Wright Brothers’ flight.
A. has considered - having been
B. was considered - being
C. is considered - to be
D. has been considered - has been
Thì quá khứ đơn
5. I’m afraid John will get drunk at the party no matter what his wife _____ to prevent it.
A. would do B. were doing C. does D. will do
6. “Any news from Vicky?” “Yes. She ____ tomorrow on the 9:15 train.”
A. arrives B. will have arrived C. arriving D. will have been arriving
Thì hiện tại đơn (chỉ lịch trình)
7. “Do you know it’s Barb’s birthday today?” “Yes, she _____ a party tonight.”
A. has B. is to have C. is having D. will have
8. Tom _____ things round the house, which is annoying.
A. always leaves B. has always left C. is leaving D. is always leaving
Hiện tại tiếp diễn với "always" chỉ sự phàn nàn
9. Teenagers _____ photos of pop stars on their bedroom walls.
A. are often sticking B. often stick C. will often stick D. have often stuck
10. At least half of the world’s population _____ more than one language.
A. speak B. speaks C. have spoken D. is speaking
11. “Did you have a good time at the .Browns?” “Not really. I _____ I’ll ever visit them again.”
A. won’t be thinking B. am not thinking C. don’t think D. think not
12. Today, universities _____ of conducting “cruel and unnecessary” tests on animals, _____ banned drugs such as amphetamines.
A. are accused - using
B. have accused - to use
C. have been accused – used
D. are being accused - being used
13. “George is in hospital.” “Yes, I’ve heard he _____ good progress.”
A. makes B. will make C. is making D. would make
14. My neighbor really gets on my nerves. She _____ the washing machine on late at night.
A. has always put B. had always put C. has always been putting D. is always putting
15. The word “Olympic” _____ from Olympian in Greece.
A. has come B. came C. comes D. is coming
16. Three swimmers, Paul, Ed, and Jim, _____ now in the competition for medals.
A. is B. has been C. had been D. are
17. “Could I have a word with you, please?” “Sorry, I’m in a big hurry. My train _____ in 15 minutes.”
A. is leaving B. left C. has left D. will leave
18. I _____ an important phone call from America. Could you tell me when it comes?
A. had expected B. have been expected C. expected D. am expecting
19. The existence of many stars in the sky _____ us to suspect that there may be life on another planet.
A. lead B. leading C. have led D. leads
20. _____, insist on a full refund.
A. Whatever he will say B. Whatever he said C. Whatever he says D. Whatever he would say
Choose the underlined part among A, B, C or D that needs correcting.
21. A star that (A) has used up its (B) energy and has lost its heat (C) became (D) a dwarf. => becomes
22. Mr. Suzuki Wants to know (A) where the supplies are kept (B), in case he need (C) more of them (D) while we’re away. => needs
23. In some areas, it has (A) against the law (B) to ride (C) a motorcycle without (D) a helmet. => is
24. The novel and the short story are the literary forms (A) most commonly called (B) “fiction”, but contemporary narrative (C) poetry and drama were (D) also forms of fiction. => are
25. When the minerals needed for (A) corn to grow (B) are lack (C), the husks may be stunted (D). => lack
Choose the underlined part among A, B, C or D that needs correcting.
46. Since ancient times (A), some people wore (B) amulets, objects that are supposed (C) to give the wearer magical (D) powers.
~> have worn
47. I will come to (A) your (B) office as soon as I prepare (C) this (D) report.
~> by
48. Our lifestyle (A) changed (B) since running water (C) came to (D) our village.
~> has changed
49. As soon (A) as he will graduate(B), he is going (C) to return to (D) his hometown
~> bỏ will
50. We haven’t (A) seen each (B) other from (C) we left school. (D)
~> since
1. If I had enough money, I__________ abroad to improve my English.
A. will go B. would go C. went D. should have go to
2. Do you think there would be less conflict in the world if all people _...... the
same language?
A. spoke B. speak C. had spoken D. will speak
3. If you can give me one good reason for your acting like this, __________this
incident again.
A. I will never mention B. I never mention
C. will I never mention D. I don"t mention
4. If I had known you were asleep, I ……._so much noise when I came in.
A. didn"t make B. wouldn"t have made C. won"t make D. don"t make
5. Unless you __________all of my questions, I can't do anything to help you.
A. answered B. answer C. would answer D. are answering
6. If Jake __________to go on the trip, would you have gone?
A. doesn"t agree B. didn"t agree C. hadn"t agreed D. wouldn"t agree
7. J: "John went to the hospital alone"
K: "If __________, I would have gone with him".
A. had he told me B. he had told me C. he has told me D. he
would tell me
8. If you __________, I would have brought my friends over to your house
yesterday to watch T.V, but I didn't want to bother you.
A. had studied B. studied C. hadn't studied D. didn't study
9. Peter: "Did you need help with your Math last night?".
Mary: "If I had needed, I __________you".
A. would call B. called C. would have called D. will call
10. If someone __________ in to the store, smile and say, "May I help you?"
A. comes B. came C. come D. should come
11. "Here's my phone number".
"Thanks. I'll give you a call if I __________some help tomorrow"
A. will need B. need C. would need D. needed
12. If I didn't work for an accounting firm, I __________in a bank now.
A. work B. will work C. have worked D. would work
13. The death rate would decrease if hygienic conditions __________improved.
A. was B. is C. were D. had been
14. The education in Japan __________if the basic principles of education had not
been taken into consideration.
A. would go down B. would have gone down
C. went down D. had gone down
15. The patient will not recover unless he __________ an operation.
A. had undergone B. would undergo C. undergoes D. was undergoing
16. If she __________ him, she would be very happy.
A. would meet B. will meet C. met D. should meet
17. If he __________ a thorough knowledge of English, he could have applied for
this post.
A. had had B. had C. has D. has had
18. If I __________the same problem you had as a child, I might not have
succeeded in life as well as you have.
A. have B. would have C. had had D. should have
19. The bench would collapse if they __________on it.
A. stood B. stand C. standing D. stands
20. If it __________convenient, let's go out for a drink tonight,
A. be B. is C. was D. were
II. Put the verbs in brackets in correct tenses.
21/ If I (have) _____had___ a typewriter, I could type it myself.
22/ If I had known that you were in hospital, I (visit) ______would have visited__ you.
23/ You could make much progress if you (attend) ___attended_____ class regularly.
24/ If I (know) ____knew____ his telephone number, I would give it to you.
25/ If you (arrive) ____had arrived____ ten minutes earlier, you would have got a seat.
26/ If he (study) ____studies____ harder, he can pass an exam.
27/ She may be late if she (not hurry) ___doesn't hurry_____.
28/ Tell him to ring me if you (see) ____see____ him.
29/ If you (speak) ____had spoken____ more slowly,he might have understood you.
30/ What (you do) ____would you do____ if you got fat?
31. If we meet at 9:30, we (have) _______will have__________plenty of time.
32. If you (find) ________find_________ a skeleton in the cellar, don't mention it to
anyone.
33. The zookeeper would have punished her with a fine if she (feed) _____had fed____the
animals.
34. If you pass your examination, we (have) …………will have……….._a celebration.
35. Lisa would find the milk if she (look) _________looked________ for it in the fridge.
36. What (happen) _________will happen________if I press this button?
37. The door will be unlocked if you (press)________press_________ the green button.
38. I should have voted for her if I (have) _________had had________ a vote then.
39. If you go to Paris, where you (stay) ________will you stay_________?
40. If you (swim) _______swim__________ in this lake, you'll shiver from cold.
41. If someone offered to buy you one of those rings, which you (choose)
……will you choose.........?
42. The flight may be cancelled if the fog (get) _________gets________thick.
43. If the milkman (come) _______comes__________, tell him to leave two pints.
44. I (call) ………would call……….._ the office if I were you.
45. Someone (sit) ________will sit_________on your glasses if you leave them there.
46. You would hear my explanation if you (not talk) ________didn't talk_________so much.
47. What I (do) _______will I do__________if I hear the burglar alarm?
48. If you (read) ______read___________the instructions carefully, you wouldn't have
answered the wrong question.
49. If Mel (ask) _______had asked__________ her teacher, he'd have answered her
questions.
50. I would repair the roof myself if I (have) …………had……._a long ladder.
Choose the word which is stressed differently from the rest.
1. a. hospital b. mischievous c. supportive d. special
2. a. family b. whenever c. obedient d. solution
3. a. biologist b. generally c. responsible d. security
4. a. confident b. important c. together d. exciting
5. a. possible. b. university c. secondary d. suitable
Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
6. You are old enough to take _______ for what you have done.
a. responsible b. responsibility c. responsibly d. irresponsible
7. These quick and easy _______ can be effective in the short term, but they have a cost.
a. solve b. solvable c. solutions d. solvability
8. John is _______ only child in his family so his parents love him a lot.
a. a b. an c. the d. no article
9. According to the boss, John is the most _______ for the position of executive secretary.
a. supportive b. caring c. suitable d. comfortable
10. She got up late and rushed to the bus stop.
a. came into b. went leisurely c. went quickly d. dropped by
11. Billy, come and give me a hand with cooking.
a. help b. prepared c. be busy d. attempt
12. Whenever problems come up, we discuss them frankly and find solutions quickly.
a . happen b. encounter c. arrive d. clean
13. What are the _______ of that country? - I think it is some kinds of cheese and sauces.
a. drinks b. beverages c. grains d. special dishes
14. Peter tried his best and passed the driving test at the first _______.
a. try b. attempt c. doing d. aim
15. Where is Jimmy? - He is ____ work. He is busy ____ his monthly report.
a. on / for b. in / about c. to / through d. at / with
16. With greatly increased workloads, everyone is _______ pressure now.
a. under b. above c. upon d. out of
17. We are not allowed _______ jeans at school.
a. wear b. to wear c. wearing d. worn
18. Sometimes I do not feel like _______ to my sibling about my troubles.
a. talk b. to talk c. talking d. talked
19. The worker was _______ his boss expected, so he was offered a raise.
a. more hard-working b. as hard-working than
c. more hard-working than d. more hard-working as
20. John _______ a respectful and obedient student.
a. said to be b. is said c. is said being d. is said to be
21. I love _______ films but I seldom find time to go the cinema.
a. see b. saw c. seen d. seeing
22. In the last hundred years, traveling _______ much easier and more comfortable.
a. becomes b. has become c. became d. will become
23. In the 19th century, it _______ two or three months to cross North America by covered wagon.
a. took b. had taken c. had taken d. was taking
24. In the past the trip _______ very rough and often dangerous, but things _______ a great deal in the last hundred and fifty years.
a. was / have changed b. is / change
c. had been / will change d. has been / changed
25. Now you _______ from New York to Los Angeles in a matter of hours.
a. are flying b. would fly c. will fly d. can fly
26. When Carol _______ last night, I ______ my favorite show on television.
a. was calling / watched b. called / have watched
c. called / was watching d. had called / watched
27. By this time next summer, you _______ your studies.
a. completes b. will complete c. are completing d. will have completed
28. Right now, Jim _______ the newspaper and Kathy _______ dinner.
a. reads / has cooked b. is reading / is cooking
c. has read / was cooking d. read / will be cooking
29. Last night at this time, they _______ the same thing. She _______ and he the Newspaper.
a. are doing / is cooking / is reading
b. were doing / was cooking / was reading
c. was doing / has cooked / is reading
d. had done / was cooking /read
30. When I _______ home last night, I _______ that Jane _______ a beautiful candlelight dinner.
a. had arrived / discovered / prepared
b. was arriving / had discovered / was preparing
c. have arrived / was discovering / had prepared
d. arrived / discovered / was preparing
Choose the sentence which has the closest meaning to the original one.
31. They are not allowed to go out in the evening by their parents.
a. Their parents do not want them to go out in the evening.
b. Their parents never let them to go out in the evening.
c. Going out in the evening is permitted by their parents.
d. Although their parents do not allow, they still go out in the evening.
32. Although my parents are busy at work, they try to find time for their children.
a. My parents are so busy at work that they cannot find time for their children.
b. Busy at work as my parents are, they try to find time for their children.
c. My parents are too busy at work to find time for their children.
d. My friends rarely have time for their children because they are busy at work.
33. His eel soup is better than any other soups I have ever eaten.
a. Of all the soups I have ever eaten, his eel soup is the best.
b. I have ever eaten many soups that are better than his eel soup.
c. His eel soup is the worst of all soups I have eaten.
d. His eel soup is good but I have ever eaten many others better.
34. She gets up early to prepare breakfast so that her children can come to school on time.
a. Despite her getting up early to prepare breakfast, her children cannot come to school on time. .
b. Because she wanted her children to come to school on time, she gets up early to prepare breakfast.
c. If she does not get up early to prepare breakfast, her children will not come to school on time.
d. Unless she gets up early to prepare breakfast, her children will not come to school on.
35. The last time I went to the museum was a year ago.
a. I have not been to the museum for a year.
b. A year ago, I often went to the museum.
c. My going to the museum lasted a year.
d. At last I went to the museum after a year.
1. Thu Thuy ( be) ….twenty –three years old next December.
a. is b. was c. has been d. will be
2. They ( learn)…..French at present with their classmates.
a. are learning b. learnt c. have learnt d. had learnt
3. (be) ……on holiday in Hue City one year ago.?
a. Is he b. Was he c. Has he been d. Will he be
4. He is practicing the piano while his sister ( learn) …..Maths.
a. is learning b. was learning c. will be learning d. has learnt
5. What time ( go)…to work every day?
a. is he going b. did he go c. does he go d. was he going
6.She ( learn)…… Japanese since her teacher was retired.
a. learnt b. was learning c. had learnt d. has learnt
7. He ( come)……to see Thailand if he had a good chance?
a. Had he come b. Has he come c. Would he come d. Will he come
8. He ( go)…….to Nha Trang in three months?
a. Did he go b. Does he go c. Will he go d. Is he going
9. Where they ( go)…..now?
a. do they go b. will they go c. did they go d. are they going
10. She ( go) …to the cinema tonight?
a. Is she going b. Was she going c. Will she go d. Has she gone
11. It is necessary that she ( learn)…….foreign language.
a. learns b. learn c. learnt d. will learn
12. Her mother ( go)…..on business to Hanoi five or six times a year.
a. is going b. went c. has gone d. goes
13. Where is your brother? He ( have)……a bath.
a. has b. had c. is having d. will have
14. What you ( do)……when I came to see you?
a. did you do b. will you do c. have you done d. were you doing
15. Peter ( not see) ….his parents for ages.
a. does not see b. will not see c. has not seen d. did not see
16. Who ( teach)…..you biology last year?
a. taught b. teaches c. has taught d. was teaching
17. I cannot go out with my girlfriend because I ( not finish) …my work.
a. do not finish b. didn’t finish c. won’t finish d. haven’t finished
18. Doctors ( learn)……French before they went to Paris.
a. learnt b. has learnt c. has been learning d. had learnt
19. French ( teach)…in that college since 1979.
a. was taught b. was being taught c. has been taught d. had been taught
20. Mr Trung ( write) ….a letter to his teacher in two weeks.
a. writes b. is writing c. wrote d. will write
21. He ( consider)…..the applicants at the moment?
a. Does he consider b. Is he considering c. Has he considered d. Did he consider
22. Mount Everest ( believe)…..to be the highest mountain in the world.
a. believed b. is believed c. was believed d. has believed
23. Recently, the best way to protect the environment ( be found)….by some scientists.
a. is found b. is being found c. was found d. has been found
24. I did not attend the wedding party last night. I wish I ( enjoy) …it.
a. enjoyed b. have enjoyed c. had enjoyed d. would enjoy
25. He cannot join his friends until he ( finish)…..the reports for his director.
a. finishes b. is finishing c. has finished d. will finish
26. The book ( publish)…..before customers ordered to buy it.
a. published b. was being published c. had been published d. had published
27. She ( devote)…all her life to the education cause in the last twenty years.
a. has devoted b. devoted c. will devote d. had devoted
28. This time the day after tomorrow, they ( come)…..to see this city again.
a. come b. will come c. will be coming d. will have come
29. When my mother leaves office next month, she ( work) ….there for twenty –five years.
a. works b. worked c. will work d. will have worked
30.Many people highly appreciated her talent, so she ( offer)….a prize last month.
4a. offered b. was being offered c. was offered d. had offered
31. Everything ( send)…..to him since he was in a small town.
a. has sent b. has been sent c. have been sent d. had sent
32. This building ( finish)……by the end of this year.
a. will have been finished b. will be finished c. have been finished d. will have finished
33. Nam told me that he ( give up)….smoking long ago.
a. gives up b. gave up c. has given up d. had given up
34. After she ( have)…….. some sandwiches, she had a drink.
a. had b. will have c. had had d. would have.
35. What they ( do)…at eight tomorrow morning?
a. are they doing b. will they do c. will they be doing d. have they done
36. When she ( bear)…..? She was born in 1985.
a. she bears b. does she bear c. was she born d. has she born
37. She told me that he ( teach)…literature at that college since 1989.
a. taught b. was teaching c. has taught d. had taught
38. Mt. Thomas ( die)…..in his old flat when the police arrived to investigate the incident.
a. died b. had died c. has died d. had been died
39. The table ( take)…away before I came here.
a. was taken b. was being taken c. had taken d. had been taken
40. The man ( catch)…any fish yet?
a. Has the man caught b. Does the man catch c. Is the man catching d. Was the man catching
