题目内容：

Not only adults but also teenagers have problems in their life. Here is a survey showing the main problems of______.

They already have enough stress from school. They have ______ homework to do both at school and at home. They have lots of exams _____. And their parents usually take them______ different classes on weekends. As a result, so many teenagers almost become bookworms(书虫). On holidays, they could hardly have ______ time to do the things they like. Now more and more teenagers______ short-sighted. They often read in bed or keep______ for a long time without having a rest. Some of them are crazy about playing computer games. Some _____ too much time watching TV. ______ serious problem among teenagers is that many of them are becoming fat. They eat too much junk food, but they take little exercise.

I think teenagers should make a plan for study and hobbies and find time to relax. Also, parents should know although it’s normal to want successful children, it’s even _____ to have healthy and happy children.

1.A. adult   B. adults   C. teenager   D. teenagers

2.A. too many  B. too much  C. much too  D. many too

3.A. join   B. take      C. to take   D. to join

4.A. to    B. for    C. of   D. in

5.A. our own  B. their own  C. his own   D. they own

6.A.will get  B. are getting  C. got    D. became

7.A. red    B. read   C. to read   D. reading

8.A. pay    B. cost   C. spend   D. take

9.A. Another  B. Other   C. Others   D. Some

10.A. unimportant  B. most important C. important  D. more important