12. Energy is ________ makes thing work.

　 　A. what　　 　　 B. something 　　　　 C. anything 　　　　　 D. that

11. - Does it matter much ________ the sales manager won’t attend the meeting tomorrow?

- I’ve no idea.

　 　A. if　　　　 　 B. what　　　 　　　 C. when　　 　　　 D. that

10. ________ seems strange to us is ________ the troublesome boy is getting along well with all his teachers.

A. It; that　　 　　　 B. What; how　　　　 C. It; how　　 　　 D. What; that

9. The little girl wanted to know ________.

A. whose digital camera it is

B. how much did the digital camera cost

　 C. if the digital camera was made in Japan　　　　　　　　　　　　　 　　　

　　 　D. where her father will buy her a digital camera

8. - Could you tell me ________ at the meeting?

　 - Sorry, I don’t know. I was not at the meeting.

　 A. what does he say　　　　　　　　 B. what did he say

　 C. what he says 　　　　　　　　　　　 D. what he said

7. I believe that those mountains ________ with trees in a few years’ time.　

A. are covered　　　　　 B. will be covered　 C. are covering　　　　　　 D. will cover

6. - I don’t know ________ he is.

　 - I heard he was an engineer.

　 A. who　　　　　　　　　　 B. what　　　　　　　　　　　　 C. which　　　　　　　 D. where

5. - Do you know ________ he didn’t turn off the lights when he left the room?

　 - Sorry. I don’t know.

　 A. how　　　　　　　　　 B. what　　　　　　　　　　　　 C. whether　　　　　　 D. why

4. There were so many kinds of bikes in the shop that he really didn’t know ________ he could choose.

　 A. which　　　　　　　　　 B. what 　　　　 　　　　　　　 C. where　　　　　　　 D. that

3. - Are you sure you have to? It’s been very late.

　 - I don’t know ________ I can do it if not now.

　 A. when　　　　　　　　　　 B. what　　　　　　　　 C. how　　　　　　　　　 D. where