10．I still have no idea________they came here quickly in such a short time.

Ⅱ.选词填空

1.The news________our schoolmates had won the game soon spread over the whole school.(that/how)

2.An idea occurred to him________he might go there by air.(that/where)

3.We'll discuss the problem________we should go aboard the train.(whether/what)

4.I have a question________we will do.(what/which)

5.The farmers are all very worried about the fact________the frost is coming.(that/where)

6.The report makes people worried________some teenage girls smoke as much as boys in some middle schools.(why/that).Com]

Ⅲ.根据汉语提示完成句子

1．This is our only request (这个问题应该尽快解决)．

2．We all doubt (他能否准时到来)．

3．People have no idea (飞机去哪儿了)．

4．News hasn't been known (这些学生何时离校)．