8．Parents should e________ their children to behave well．

7．He was so careless that he d________ the bowl on the floor．

6．There are some books about music on these book s________．

5．I ________（想知道）why you were late for school this morning．

（B）根据句意和所给的首字母提示，补全句子中的单词。

4．The temperature will be ________（低于）zero．You'd better put on your coat．

3．In 1872，it was ________（发现）that the manatees were endangered．

2．I have many new ________（邻居）in Beijing．They are all friendly to me．

1．Liu Xiang ______（代表）Shanghai to take part in the 11th Chinese National Games in Jinan．