69. My father was watering flowers in the garden while I _________ (read) in it.

68. It’s _______(usual) for Sandy to stay at home at weekends because she is outgoing.

67. It’s _________(danger) for the boys to play on the street.

66. I know only one of the ____________ (visit), how about you?

65.　 There is more and more air ________( 污染) in the big cities.

B) 根据句子意思，用括号中所给单词的适当形式填空。

64.　 Be quiet! I heard someone _________(哭) in the bush.

63.　 Summer is his favourite season because he likes ______________ (游泳).

62.　 The earthquake in Taiwan made a lot of people ________(无家可归).

A)根据括号中所给的汉语写出单词，使句子意思完整正确。

61.　 Little Jim is ______________ (独自的) at home when his parents got to work.