Now Tom with his classmates football on the playground.A. playB. are playingC. playsD. is

问题补充：

Now Tom with his classmates football on the playground.

A. play

B. are playing

C. plays

D. is playing

答案：

A. play

B. are playing

C. plays

(答案→)D. is playing

解析：考查主谓一致：主语是with连接两个主语，谓语和前面的主语一致，这句话就是和Tom一致，用单数，这句话的时间是now，所以用现在进行时，选D。