2 . Many major economic problems         to be solved, there is no point         the growth rate of this year now.

A．remained; to predict	B．remaining; to predict
C．remained; predicting	D．remaining; predicting

3 . It’s no use ________(cry) over spilt milk. （所给词的适当形式填空）

4 . Cigars are believed to c _____ Nicotine, which can be harmful to our nervous system.

5 . That was the first time that she ________ (invite) to visit the Great Wall, which made her extremely delighted. (所给词的适当形式填空）

6 . 很多人被活埋了，整个城市也被掩埋。
Many people were _____ ______, and _____ ______ the city .

7 . It is r________ that people have their teeth examined every year.

8 . There is ______ (毫无疑问)that Socrates has had a deep influence on Western philosophy and science.

9 . 谈及广告，我们都必须运用自己的智慧，而不要做广告的奴隶。
_______advertisements, we must all use our intelligence and not_______.

10 . 跟他就这个问题争辩是没有用的，因为他不会改变看法。
There is ____________________________________________ him about the question, for he won’t change his opinion.