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.―      you swim？―No, I      

A. Can , can     B. Can, don’t       C .Do, can’t      D. Can, can’t

(     )17. ―Eric, is this __________book.

―No, it isn’t. My book is on my desk.

A. you        B. he           C. his          D. your 

(    ) 18. I’m good ______ old people and I’m good ______ playing the guitar, so I can join you to help them.

      A. for, with    B. for, at    C. with,  at    D. at, for

(     )19.Daming, please be _________ with your things from now on.

A. careful          B. ready                    C. sure           D. fantastic 

（    ）20.―       do they come to school? ―They       the subway.

       A .How; by      B. What ;take       C .How; take     D. What ;by

(    )2 1. Is this _______ lion or _______ elephant?

      A. a,  an     B. an,  a    C. the, an      D. a, the

(     )22. ―Are you good __________singing the English songs?

―Yes, I am.

          A. for           B. to           C. with               D. at

（    ）23.I think taking a walk is       boring.

       A. a kind       B. kind of          C. kinds of       D. a kind of

(     )24.Computers in the future will be very small_________ light.

A. because                    B. but           C. and              D. so

（    ）25.Why not      to the park this weekend?

       A. goes          B. go                C. going           D. to go