一份不错的质量检测卷!

二、单项选择（本题有15小题，每小题1分，共15分）
请从A、B、C、D四个选项中选出可以填入空白处的最佳选项。
16. I have ______ pencil. It’s ______ American pencil.
A. a; a    B. an; the   C. the; an   D. a; an
17. —Is this your bicycle, David?  —No, it’s not ______. It’s Helen’s.
A. his   B. yours   C. mine   D. hers
18. The dress fits me well, ______ I don’t want to buy it because it’s too expensive.
A. so   B. and   C. or   D. but
19. After class, I like playing computer games and chatting _______ my friends ______ the Internet.
    A. to; by   B. with; on  C. for; in   D. about; through
20. —Must I hand in my exercise book now, Mr Zhao?
   —No, you ______. You may give it to me tomorrow.
    A. needn’t  B. mustn’t  C. can’t   D. may not