36. The fewer cars we have, the less p                 there will be.

37. Don't throw litters away. We should protect our e                .

38. Most people in the world love p                , they don't need war(战争).

39. He lives in an a                 with his parents.

40. Don't be near the lions. They are d                .

41. I b                 I can make progress if I do my best.

42. You're right, so no one here d                 with you.

43. It's i                 to finish the difficult work in two hours.

44. I will p                  go swimming this afternoon because it's too hot today.

45. We'll take part in all kinds of activities d                 the coming holidays.

46. It will                 (或许) rain.

47. I think it's                 (可能的) for you to get first prize in the contest.

48.                 (相信) it or not, I did the work on my own.

49. It's                 (危险) to cross the roads when the lights are red.

50. You should have a rest if you feel                 (有压力的).

51. An unhappy home                 (环境) can affect a child's behavior.

52. We need to help the animals live in                 (和平).

53. Gao Wei and his classmates went to                 (植) trees.

54. The story starts in 1898                 (在……期间) the Qing Dynasty.

55. He puts the wallet carefully in his                 (里面的) pocket.

56. 在这个镇上每个人都应该参与到清扫的工作中!

Everyone in this town                                           &n