5. 解析：选B。考查倒装语序。在not only ...but also ...句型中，当not only置于第一个分句句首时，第一个分句要用部分倒装语序。又因为第一个分句为被动句，因此答案为B。

4. 解析：选C。句意为：知道考试会延时，已经做完试题的同学又坐回到座位上一直等到考试结束。由句意可知，C项正确。

3. 解析：选A。考查独立主格结构。故选A。

9.　　　 　

removed the cotton?wool, I was able to tell him of that he had pulled out the wrong tooth.　　　　　　　　　　　　　　　　　 10.　　　

“must+have+done”。故选C。

8.　　　

couldn?t say everything. When the dentist at last

7.　　　

the hole where the tooth had been. I suddenly felt very worried, so

6.　　　

nod or make strange noises. Meanwhile, my tongue was busy search out

5.　　　

In answer to these questions, I could neither

4.　　　

was growing. He then asked me a lot of other question.

3.　　　

bird eggs and asks me whether my collection