7.  My kids spend hours _________________(chat) on the phone with their friends.

6.  Its always difficult being in a foreign country,____ (especial) if you don't speak the language.

5.  —Have you managed __________ (complete) the work given by your boss?

-~Not yet, though I have tried to.

4.  Montreal is the second largest French-speaking city in the world, Paris ________ (be) the largest.

3.  The oceans and seas ________ (surround) the islands are more or less polluted.

2.  Rather than __________ (live) in their big house in the city, they preferred ________ (stay) in the countryside.

用所给词的适当形式填空

1.  This field________ (measure) fifty metres in ________ (long) , which is twice the size of another one next to it.

5.    我们对孩子们已独立地解决了他们的问题的事实感到吃惊。

We __________________ the fact that the children have worked out their problems on their own. (be surprised at)

4.    迄今为止所有克隆动物都患有各种各样严重的机能失调，它们当中有许多在出生后不久就死了。

So far all cloned animals have suffered from different serious disorders, ___________________  soon after birth.(独立主格）

3.  我不知道你为什么会在驾照考试中犯这样的错误，但是你必须接受没有通过的事实。

I ________________ you have made such a mistake in the driving test, but you have to accept ___________ you have failed, (idea和fact后面跟同位语从句)