--- Can you ride a horse?

　 --- No, I ______.

　　A. needn't    B. may not    C. can't    D. mustn't

I knocked on the door but ______ answered.

A. somebody    B. nobody    C. anybody    D. everybody

Paul and I ______ tennis yesterday. He did much better than I.

　　A. play    B. will play    C. played    D. are playing

Where's Tom? His mother ______ him now.

　A. is looking for     B. will look for    C. has looked for     D. looks for

--- Excuse me, could you tell me how ______ to Beijing Zoo?

　　--- Well, you may take Bus No.27.

　A. get     B. gets     C. getting     D. to get

My aunt is a writer. She ______ more than ten books since 1980.

　　A. writes     B. wrote     C. has written     D. will write

--- What were you doing this time yesterday?

　　--- I ______ on the grass and drawing a picture.

　　A. sit     B. sat     C. am sitting     D. was sitting

I will send you an e-mail as soon as I ______ in Canada.

　　A. arrive    B. arrived     C. am arriving     D. will arrive

Many accidents ______ by careless drivers last year.

　　A. are caused     B. were caused     C. have caused      D. will cause

--- Do you know ______ tomorrow?

　　--- At 8 o'clock.

A. when did she come      B. when she came

C. when will she come      D. when she will come