12.--We haven't heard from Jane a long time.

　　 --What do you suppose ___________ to her?

　　 A. was happening 　　　　 B. has happened　　 　 C. to happen 　　　　　 D. having happened　

11. Someone is ringing the doorbell. Go and see ___________.

　　 A. who is he 　　　　　　　 B. who he is 　　　　　　　　 C. who is it 　　　　　　　　 D. who it is　

10. Energy is ______makes things work.

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

9. ---Are you satisfied with her answer?

　 ---Not at all. It couldn't have been ____________.

　 A. worse　　　 　　　　　　　 B. so bad　　　　 　　　　 C. better　　　　　 　　 D. the worst　

8._______she couldn't understand was ___________ fewer and fewer students showed interest in her lesson.

　 A.　 That , what 　　　　　　　　　　 B. What , because　　　 C. What , why 　　　　　　 D. Why , that

7. ____________ you have seen both fighters, _____________ will win?

　A. Since; do you think who　　 　　　　　　　　　　　　　 B. As; who you think

　 C. When; whoever　　　　　 　　　　　　　　　　 D. Since; who do you think

6. It is generally considered unwise to give a child ____ he or she wants.

　 A. however　　 　　　　　　　 B. whatever　　 　　　　 C. whichever　　 　　　　 D. whenever

5.You can’t imagine ____ when they received these nice Christmas presents.

　 A. how they were excited　　　 　　　　　　　　　　 B. how excited they were

　 C. how excited were they　　　 　　　　　　　　　　 D. they were how excited

4. ____ caused the accident is still a complete mystery.

　 A. What　　 　　　　　　　　　　 B. That　　　　　　　 C. How　　　　　　 D. Where

3. --Is there anything that we can do?

　 -- _________

　　 A. I believe　　 　　　　　 B. Of course　　 　　　　 C. I don't think so　 　　　 D. I'm sure