14. During the study period class yesterday, it (be) hard for us to concentrate because the students net door (make) so much noise.
15. This computer is the best one I (ever/use).
16. This is the first time he ( visit) Quangtri.
17. I don't know how ( answer) your questions.
18. Keep quiet! You ( always/ talk) in class.
19.This house ( not/ use) for a long time.
20. My mother ( go) to see the dentist this afternoon.
21. I decided ( stay) at home and learn my lesson.
22. When I (see) you yesterday, you (play) soccer in the street.
23.Students should (work) hard on their English grammar
24. My friend Jessica (come) while (eat) dinner last night.
25.My roommate came home late last night. I (sleep) when she (get)home
26. While I (watch) TV last night, our uncle (phone)
27. When they (come), Lan and I (do) our homework.
28. Millions of people (visit) Ha Long Bay every year.
29. She asked him if he (remember)he address.
30. She (do) the housework now.
31. The window (break) last night.
32. While I (wait) for the bus, I met Karen.
33. When Harry (woke) up, we told him the good news.
34. I don’t know where (buy) some things I need.
35. I’d like you (meet) my mother.
36. She has a lot of novels (write) in English.
37. It’s was late, so we decide (take) a taxi home.
38. We were hungry, so I suggested (have) dinner early.
39. It started (rain) when they left home.
40. Would you mind (close) the door?
31 simpliness
32 noisy
33 friendship
34 advertisments
35 mountainous
36 invention
37 modernize
38 different
39 students
40 interested