21. It (rain) __________ hard. We can’t do anything until it (stop) __________ 22. Last night we (watch) __________ TV when the power (fail) __________. 23. That evening we (stay) __________ up to talk about the town where he (live) __________ for some years. 24. I (sit) __________ down for a rest while the shoes (repair) __________. 25. Half way to the office Paul (turn) __________ round and (go) __________ back home because he (forget) __________ to turn the gas off. 26. London (change) __________ a lot since we first (come) __________ to live here. 27. While we (talk) __________ on the phone the children (start) __________ fighting and (break) __________ a window 28. He used to talk to us for hours about all the interesting things he (do) __________ in his life. 29. You know she (stand) __________ looking at that picture for the last twenty minutes. 30. I (spend) __________ a lot of time travelling since I (get) __________ this new job. 31. When we (be) __________ at school we all (study) __________ Latin. 32. When I (meet) __________ him, he (work) __________ as a waiter for a year. 33. After he (finish) __________ breakfast he (sit) __________ down to write some letters. 34. She (have) __________ a hard life, but she’s always smiling. 35. I think Jim (be) __________ out of town.  36. I (learn) ____________ English for seven years now. 37. But last year I (not/work) ____________ hard enough for English, that's why my marks (not/ be) ____________ really that good then. 38. As I (pass/ want) ____________ my English exam successfully next year, I (study) ____________ harder this term. 39. During my last summer holidays, my parents (send) ____________ me on a language course to London. 40. It (be) ____________ great and I (think) ____________ I (learn) ____________ a lot.  

Để hoàn thành câu hỏi trên, chúng ta cần điền đúng dạng đúng của động từ trong ngoặc vào chỗ trống và sau đó viết lại câu hoàn chỉnh. Dưới đây là cách làm và câu trả lời cho mỗi câu hỏi:

21. It is raining hard. We can't do anything until it stops.

22. Last night we were watching TV when the power failed.

23. That evening we stayed up to talk about the town where he had lived for some years.

24. I sat down for a rest while the shoes were being repaired.

25. Half way to the office Paul turned round and went back home because he had forgotten to turn the gas off.

26. London has changed a lot since we first came to live here.

27. While we were talking on the phone the children started fighting and broke a window.

28. He used to talk to us for hours about all the interesting things he had done in his life.

29. You know she has been standing looking at that picture for the last twenty minutes.

30. I have spent a lot of time travelling since I got this new job.

31. When we were at school we all studied Latin.

32. When I met him, he had been working as a waiter for a year.

33. After he finished breakfast he sat down to write some letters.

34. She has had a hard life, but she's always smiling.

35. I think Jim is out of town.

36. I have been learning English for seven years now.

37. But last year I hadn't worked hard enough for English, that's why my marks weren't really that good then.

38. As I want to pass my English exam successfully next year, I will study harder this term.

39. During my last summer holidays, my parents sent me on a language course to London.

40. It was great and I think I learned a lot.

I have been learning English for seven years now.

Half way to the office Paul turned round and went back home because he had forgotten to turn the gas off.

I sat down for a rest while the shoes were being repaired.

That evening we stayed up to talk about the town where he had lived for some years.