15. I won't have anyone _______ in here. Whoever breaks the regulation will get punished.

A. to smoke　　　　　　 B. smoke　　　　　　　 C. smoked　　　　　　 D. smoking

14. 一Did you tell him that we’ve put off the meeting？

一No. He rushed out before I could say ________.

A. something　　　　　 B. nothing　　　　　　 C. anything　　　　　　 D. everything

13. I don't want to _______ the topic, but why on earth did you get home that late last night?

A. take up　　　　　　　 B. make up　　　　　　 C. break up　　　　　　 D. bring up

12. One cause of this attitude students have can be represented by the fact _____ young teachers don’t know how to impose their respect among their students.

　 A. which　　　　　　　　 B. that　　　　　　　　　 C. why　　　　　　　　　 D. /

11. _______, they make mistakes as part of their everyday behavior.

A. Not only humans make mistakes　　　　　　　 B. Not only do humans make mistakes

C. Only humans make mistakes　　　　　　　　　　　　　 D. Only do humans make mistakes