二、单项选择（共10小题，每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21. —How long are you staying? —I don’t know.________.
A．That’s OK B．It depends C．Never mind D．It doesn’t matter
22.There are______great number of students entering for the competition，and ______number of them is increasing.
A．a; the B．a; a C．the; the D．The;a
23. Look, here come my ______. They look happy.
A. visitor B. worker C. friend D. students
24. After Mo Yan won the Nobel Prize, more people began to read ______ books.
A. he B. him C. his D. himself
25. Look! The children_______ basketball on the playground.
A. plays B. are playing C. is playing D. played
26. He ran as ______ as he could, and finally he got the first prize.
A. the fastest B. fastest C. faster D. fast
27. The movie ______ we saw last night was boring.
