When the police arrived.........................., the thief (leave)........................

2. They (clean)......................... everything by the time he (come)............................... .

3. When she (turn up)........................., the concert (start)...............................

4. By the time you (get)....................... her letter, she (leave)......................... for Paris.

5. By the time I (come)..................home, I (realise)........................ that I (lose)....................... my keys.

6. They (wash)...................... the car before they (drive)......................................... to work.

7. After he (call)................... his lawyer, he (sign)...................... the contact.

8. Before they (grow)...................... some trees, they (cut)....................... down the old ones.

9. We (sleep)......................... when we (hear)........................... the door bell.

10. Last night, I (cook).................... a new food. I really (never try)............................... that food before.

11. Yesterday Tom (walk).........................along the street when a man (run)...................... very fast and nearly (hit)................ him.

12. After we (prepare).................... for many hours, we (finish)..................... the presentation.

13. He (work)..................... as a doctor for 30 years before he (retire)......................... in 2020.

14. By the time my mother (come)................... back, I (do)...................... all the housework.

15. Before he (swim).......................... in the river, he (take).......................... off all his clothes.

16. Jane (eat)........................ a sandwich and then (go)........................ to work.

17. He (die)........................... after he (be).............................. ill for a long time.

18. I (chat)...................... with my friends before I (write)......................... an essay last night.

19. She (wait)...................... for him until 7.00 but he (not come)............................ so she (leave)……

20. When I (open)....................... the door I (recognise)........................... that someone (break).................... into my house and (take).......................... some things.

21. We (have)........................... a party in the garden when it (suddenly rain)............................... heavily.

22. The fire (start)............................... when the campers (hold).................................. a party in the forest.

23. The accident (happen)........................... because the car (run)............................. too fast.

24. While we (cut)......................... the grass in the garden, we (catch)............................ a box of gold.

25. You or your brother (break)........................... my window?

26. He (break).......................... his leg when he (play)....................... football.

27. Julia (write)........................ her first novel when she (be)................................ 19.

28. I (work)........................ on the computer when the fire (break)......................... out.

29. They (eat)....................... everything by the time I (arrive)............................... at the party.

30. When I (find)........................... my purse, someone (take)....................... the money out of it.

31. By the time you get her letter, she (arrive)........................ in Paris.

32. When they get  to the station, the train (leave)..................................

33. By the time I (get)............................. to school, the gate (close).................................

34. Sorry, I (not listen).................................. to you at that moment because I (think)........................... about something else.

35. Before she (fly).............................to Paris, she (visit)......................... us.

36. By the time the boss arrived, I (do).............................. all my work.

37. You (cook)................................. the dinner by the time he came home?

38. We (wait) here……………..since we (come…………………).

39. I (never see)................................. such a famous person before until I (meet) him.

40. When he (open)......................... the door, he (see)........................ a strange man.

41. A man (find)...................... something in his room when he (come)............................home.

By the time the police come the robber had run away.

(A) By the time

(B) The

(C) Come

(D) Had run

SEQUENCE OF TENSES

1) before the police (catch) ... the thief, he (steal) ... two more watches

2) when we (play) ... football at 5.30 p.m yesterday, there (be) ... a terrible explosion

3) by the time the clock struck twelve, the coach (turn) ... into a pumpkin

4) after the company (hire) ... Joe, he began to work on his first project

5) our two senior parners (know) ... each other since they (be) ... at primary school

6) after Linda (receive) ... the new bag, she used it immediately

7) Mike has been promoted twice since he (join) ... the company

8) I (not/enjoy) ... myself for two weeks since I (hear) ... that my final exam grades were low

9) when the boys arrived at the cinema, the film (already,start) ...

10) i (have) ... lunch when James (arrive) ...

SEQUENCE OF TENSES

1) before the police (catch) ... the thief, he (steal) ... two more watches

2) when we (play) ... football at 5.30 p.m yesterday, there (be) ... a terrible explosion

3) by the time the clock struck twelve, the coach (turn) ... into a pumpkin

4) after the company (hire) ... Joe, he began to work on his first project

5) our two senior parners (know) ... each other since they (be) ... at primary school

6) after Linda (receive) ... the new bag, she used it immediately

7) Mike has been promoted twice since he (join) ... the company

8) I (not/enjoy) ... myself for two weeks since I (hear) ... that my final exam grades were low

9) when the boys arrived at the cinema, the film (already,start) ...

10) i (have) ... lunch when James (arrive) ...

1. When the police arrived.........................., the car (go)........................

2. They (eat)......................... everything by the time he (come)............................... to the party.

3. When I (come)                   came , the meeting (start)...............................

4. By the time you (get)....................... her letter, she (leave)......................... for Paris.

5. By the time I (arrive)..................the airport, I (realise)........................ that I (leave)....................... my passport at home.

6. They (lock)...................... the door before they (go)......................................... out.

7. After he (have)................... breakfast, he (drive)...................... to work.

8. Before they (build)...................... a new school, they (pull)....................... down the old one.

9. We (have)......................... lunch when we (hear)........................... the news.

10. Last night, I (eat).................... a new food. I really (never eat)............................... that food before.

11. Yesterday I (cross).........................the street when a truck (run)...................... very fast and nearly (hit)................ me.

12. After we (walk).................... for many hours, we (reach)..................... the top of the hill.

13. He (be)..................... a teacher for 20 years before he (retire)......................... in 2009.

14. By the time the boss (come)................... back, I (finish)...................... all the work.

15. Before he (cook).......................... the dinner, he (buy).......................... some food at the butcher’s.

16. Mary (make)........................ a sandwich and then (sit)........................ on the sofa.

17. He (die)........................... after he (be).............................. ill for a long time.

18. I (drink)...................... some coffe before I (go)......................... to bed last night.

19. She (wait)...................... for him until 7.00 but he (not come)............................ so she (leave).

20. When I (open)....................... the door I (recognise)........................... that someone (break).................... into my house and (take).......................... some things.

21. The match (go)........................... on when it (suddenly rain)............................... heavily.

22. The fire (start)............................... when the campers (have).................................. a party in the forest.

Exercise 2:  Choose A/B/C OR D:                             

1.     I ________ my uncle’s home many times when I ________ a child.

      A. visited/ is            B. visits/ was         C. visited/ was                          D. visited/ were

2.     It ________ me half an hour to get to the supermarket yesterday.  A. take        B. takes                  C. took                            D. spent

3.     I___him well when he came last weekend.  A. didn’t treat     B. not treated     C.  have treated         D. was treating

4.     I can’t believe that my expensive bicycle ___last night.  A. was stolen   B. was stealing  C. is stolen                             D. stole

5.     As I ________ my homework, he came yesterday afternoon.

      A. did       B. were doing       C. am doing              D. was doing

6.     At this time yesterday, everyone ________. in the room.

      A. is dancing                   B. was dancing               C. dances                                   D. danced

7.     After Mary ________ her degree, she went to work in her father's company.

      A.  had finished               B. is finishing                  C. finishes   D. have finished

8.     A small stone struck the windshield while we ________ down the road.

      A. drive            B. were driving     C. had driven       D. had been driving

9.     ______this letter ________ last night? A. Is/ written  B. Is/ wrote      C. Was/ written    D. Were/ written

10.  The houses where I used to live ________ very comfortable.

      A. is                                 B. was                             C. are D. were

11.  After he ________ English course, he went to England to continue his study.

      A. will finish     B. has finished   C. had finished     D. have been finished.

12.  Who ________ when I came?

      A. were you talking to       B. are you talking to   C. you are talking to           D. you were talking to

13.  Before he ________ to bed, he ________ his homework.

      A. went/ has done           B. went/ had done           C. goes/ have done                                      D. goes/ did

14.  He is the most wonderful person I ________.

      A. have ever met             B. had ever met    C. ever meet    D. am meeting

15.  Millions of dollars ________ spent on advertising last year.  A. is   B. was                             C. are                              D. were

16.  He found a watch in the street, and then he ________ to return it to the loser.
      A. had tried                     B. was trying                   C. tried    D. had been trying

Exercise 3: Find and correct the mistakes:

1. I had ran before you called me.

2. I had hidden your wallet before you find it yesterday.

3. Mary had dug before you plant trees yesterday afternoon.

4. I had have wonderful love before you appeared in my life.

5. I had burnt my body before they say good bye to me.

6. My aunt work in London before she moved to Norwich.

7. The Norwegians planted their flag at the summit just before the British team arrived.

8. By the time I come, they had finished watching film.

9. I thought  he hasn't eaten anything.

10. After he come home, he continued going

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II Chia động từ

1.  The environment (not become) ……….. polluted if factories (not dump) ……….waste into rivers.

2. She (cycle)………at 10 AM next Sunday?

3.  Many buildings (destroy)….during last storm in Ha Tinh

4. By the time the police came, the thief (leave)

5. Don’t forget (turn)….off the lights before going to bed

III. Viết lại câu

1. Before she went to bed, she had finished her homework.

After ……………………………………………………………………………………….

2. Many people had been homeless before they were rescued by the volunteers.

By the time…………………………………………………………………………….

3. When I came to the theatre, the film had started.

After…………………………………………………………………………………

4. After the manager had informed us clearly about the job, we started our work.

→ By the time ________________________________________________________

5. My father had had dinner by the time I came home.

→ Before ____________________________________________________________
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