39. Most of the international business letters are ________ in English. (write)

38. That is used for __________ my bike. (lock)

37. He went to _________ last year and met a lot of friendly ______. (German)

36. I’d like two _________ sweaters for my daughter. (wool)

35. Trees can often prevent floods and _________. (dry)

34. Their __________ number is CA 322. (fly)

33. Unluckily, he was __________ hurt in this accident. (bad)

32. Our English teacher always makes her classes ___________. (live)

31. __________ you give him the book back or not, I’ll tell the teacher. (if)

30. I think this CD player is __________ to learn English. (help)