六、选择正确答案。（10分）
(     ) 1.What are you doing，Miss Li ? I             an English book.
A .is reading         B. reading      C. am reading
(     ) 2.The dog can’t               on the swing .
A. play            B. is playing      C. playing
(     ) 3.Mike and his friends               basketball.
          A. is playing     B. playing       C. are playing
(     ) 4.I’ll go and join        .
A. they       B. them       C. their
(     ) 5.The dog               after the mouse.
A. is to run    B. is running   C. are running

感谢楼主的付出，你辛苦了！

谢谢楼主，真是好东西。

Thank you very much

bucuo,henhao...........

It's very kind of you .Thank you very much.

和以前下的有很多重复  楼主整理后又卖了一遍

很好的资料
谢谢我下了

谢谢！！！！！！！！！！