5.She is hardly ever_________(stress) and she ___________(laugh) a lot.

4.The knew it was never too late _____________(change) bad habits.

3.________(spend) time with friends is __________(good) than ________(watch) TV at home.

2.___________(exercise) helps us to keep in good ____________(healthy).

1.I think it’s important for teenagers ___________(help) out.

15.(　 ) You should learn _________at a party.

A. how to behave well　　　　 B.　 how behave well　　

C. how behaving well　　　　 D. behaving well how

14.(　 )Don’t ________when you are eating. It’s not polite.

　　　 A.　 makes a noise　　　 B.　 make noises　　 C. making noise　 D. make noise

13.(　 )What are you supposed to do when you meet _______the first time.

　　　 A.　 at　　　　　 B.　 for　　　　 C.　 on　　　　　　 D. in

12.(　 ) Why not _______you finished story to a friend? It will help some mistakes.

　　　 A. reading　　　　 B. read　　　　　 C. to read　　　　　 D. reads

11.(　 )While ________to the radio, the girl couldn’t help laughing.

　　　 A. listened　　　 B. listening　　　 C. have listened　　　 D. listens