1．他以前是个老师，对吗?   

    He ____ ___ be a teacher，____ he?

2．Tom被允许写完作业后踢球。

    Tom is ______ to play football after his homework_____  ____．

3．士兵们尽力阻止水位上涨。

    Soldiers tried to _____the water _____  ____．

4．中国人口最多的是东南部。

The _____  ____ part of China is the southeast．

5．你怎样看待污染?   

    How do you ______  _____pollution?

6．我们应该知道改变坏习惯永远不会太晚。

    We are supposed to know it is ______ _______ ______to change had habit．

7．我有个问题想和你商量商量。

I have a problem that I need to _____ ____ with you．

8．你还记得发生在你身上的最尴尬的事情吗?

Do you remember the most _____ thing that _____ to you?