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1. It is two years since she left university.
2. Laurence last saw her sister when she left for Japan.
3. The last time Lucky wore that dress was at Barbara's wedding
4. My mother has worked at this school for 25 years.
5. This is the first time I have been to this entertainment park.
6. The last time I heard from him was in August.
8. I have not played football since 1970.
9. We last saw Tom when he moved to Bristol.
10. Bob has not visited Vietnam before.
Mk tưởng câu 1 phải là "It has been two years since she left university" chứ nhỉ 
1) He is running his own restaurant ?
=> His own restaurant is being run
2) The secretary opens the mails every morning
=> The mails are opened by the secretary every morning
3) The teacher doesn't allow me to take the seat by the window
=> I am not allowed to take the seat by the window by the teacher
4) Tom's absence worried his mother
=> Tom's absence made his mother worried
5) They are building a new school in this town
=> A new school is being built in this town
6) You should finish the report right now
=> The report should be finished right now
7) Are you going to post this letter ?
=> Is this letter going to be posted?
8) He has pay the bills before the fifth of the month
=> The bills have been paid before the fifth of the month
9) No one has opened that box for the past hundred years
=> That box hasn't been opened for the past hundred years
10) The enemy used to it take the bag
=> It was used to take the bag by the enemy
11) The fire has destroyed many houses
=> Many houses have been destroyed by the fire
12) The children are carrying the chairs in to the house
=> The chairs are being carried into the house by the children
1 Did you study at this school before?
2 I wish you had gone to the conference last week
3 Plans have been drawn for building a new hospital.
7 chắc thêm chữ so
1. He does his homework every morning
=> His homework is done every morning
2. I saw him at the cinema cinema last night
=> He was seen at the cinema last night
3. Hoa is writing a letter at present
=> A letter is being written by Hoa at present
4. No oneswwept the school yard yesterday
=> The school yard wasn't swept yesterday
5. Mr. Tan is bought this car for two year
=> This car was bought by Mr. Tan for two years
6. This is the first time his family has eaten Chinese food
=> This is the first time Chinese food has been eaten by his family
1. Phong has not visited his grandparents for a month.
2. He is often bought new clothes by his mother before Tet.
3. Many natural disasters have been caused by global warming.
1. The last time Phong visited his grandparents was a month ago.
Phong has not visited his grandparents for a month.
2. His mother often buys him new clothes before Tet.
He is often bought new clothes by his mother before Tet.
3. Global warming has caused many natural disasters.
Many natural disasters have been caused by global warming.