22、Teenagers        their health because they play computer games too much.

A. have damaged  B. are damaging  C. damaged  D. will damage

21、---I am afraid I can’t return the book to you before Friday.

---       .

Don’t be afraid  B. Be careful  C. Not at all  D. Take your time

20、All people,      they are old or young, rich or poor, have been trying their best to help those in need since the disaster.

A. even if  B. whether  C. no matter  D. however

19、

The artist was born poor,      poor he remained all his life.

 A. and  B. or  C. but  D. so

18、He       as a national hero for winning the first gold medal for his country in the Olympics.

     A. regarded   B. was regarded  C. has regarded  D. had been regarded

17、--I can’t find my purse anywhere.

---You       have lost it while shopping.

     A. may  B. can  C.  should   D. would

16、        to reach them on the phone, we sent an email instead

 A. Fail   B. Failed   C. To fail     D. Having failed

15、---May I ask a question after class, Sir?

---       , but not during my lunch break.

     A. I’m sorry        B. Anytime

     C. Certainly            D. Go ahead

14、

In many places in China,       bicycle is still       poplar means of transportation.

     A. a; the           B. /; a

     C. the; a           D. the; the

13、Only when I left my parents for Italy      how much I loved them.

     A. I realized        B. I had realized

     C. had I realized     D. did I realize