14. We have overlooked the fact __________ the children’s emotional development may be easily damaged.

A. which　 B. that　 C. what　 D. 不填

13. In Mark’s speech, he made the point __________ far more people died from smoking than from taking drugs.

A. where　 B. what　 C. which　 D. that

12. It is already well understood___________ causes the global warming.

A. what　 B. when　 C. how　 D. that

11. ___________we’ll go camping tomorrow depends on the weather.

A. If　 B. Whether　 C. Where　 D. That

10. _________he said at the meeting astonished everybody.

A. It　 B. That　 C. What　 D. The fact

9. Obviously they didn’t see the significance of the plan. That’s __________the problem was.

A. why　 B. where　 C. that　 D. how

8. -----Are you still thinking about yesterday’s game?

　 -----Oh, that is ____________.

A. how I feel excited　　　　　　 B. if I feel excited

C. what makes me feel excited　　 D. why makes me feel excited

7. As soon as he comes back, I’ll tell him when ___________.

A. you will come again　 B. will you come again　

C. you come again　 　　D. do you come again

6. Mary _________be late, so don’t wait for her.

A. would　 B. can　 C. should　 D. may

5. Don’t take the lift in a fire because the lift __________ become trapped between floors.

A. must　 B. may　 C. would　 D. should