53. Children should speak to old people _______ .

52. ---Have you seen the film __________?

　 ---Not yet.

51. Simon said he had a ________ journey last week.

50. The woman came back with an __________ bag, because the shop was closed.

B. 请根据句意从方框中选择合适的词，并用其适当形式填空，使句子通顺。

　　　 　polite　 four　　 please　 we　 recent

49. They tried many times. However, all their efforts are _________ (of no use) .

48. The government will________( give or provide) food and clothes to those homeless children.

47. Her mother has chosen a summer ___________(课程) for her, including English and maths.

A. 请根据句意、括号中的中文提示或英文释意，写出句中所缺单词，使句子通顺。

46. It will be_________(多雾的) tomorrow. I will go to Beijing by train instead of by air.