50. We’ve worked for a long time. Let’s stop　　 ▲ 　　(drink) some water.

49. Since he fell off the bike, John　　 ▲ 　　(lie) in bed for nearly a week.

48. He seldom　　 ▲ 　　(回复) to the e-mails his friends send him.

47. The dresses　　 ▲ 　　(本身) are made of common materials, but they sell well because of the famous designer.

46. Kids　　 ▲ 　　(低于) 5 years old can’t play with this kind of toy.

45. After Jim answered the phone, he rushed out of the house　　 ▲ 　　(立即).

44. As soon as they　　 ▲ 　　(到达) to the hotel, they held a meeting at once.

43. The guide has collected all the　　 ▲ 　　(visit) ID cards.

B)根据句意及汉语提示，写出各单词的正确形式，每空填一词。

42. Four　　 ▲ 　　(five) of the students in our class have heard about the trip.

41. Don’t be　　 ▲ 　　(patient)! You should listen to what he is saying first.