1 The telephone was invented by Alexander Graham Bell

giải thích:  câu chủ động:  S* + V +O

                  bị động:    S mới (O) + be + P2 + by S*

2 Why don't we meet outside the theatre    

   What about meeting outside the theatre

   Shall we meet outside the theatre

   I suggest meeting outside the theatre

3 Let 's go to the theatre tonight

4 Minh spends 2h doing his homewwork everyday

giải thích:  S + spend + time + Ving:  dành bao nhiêu thời gian làm gì

5 How old is your daughter?

6 My family used to live in Hai Phong

giải thích: use to Vo: từng làm gì

7 You don't have to water that tree everyday

8 You don't need to/ don't have to set off early

9 I used to have a cat.....

10 I used to live on a farm

11 You have to revise new word regulary

12 We have studied English for 5 years

13 How long have you studied French

14 Linh prefers staying at home to going out

     I would rather stay at home than go out

     I would prefer to stay at home than go out

15 We have lived here since 1995

16 You don't have to drive fast