Look out! Can you see some boy students basketball?A. playsB. playC. playedD. playing

问题补充：

Look out! Can you see some boy students basketball?

A. plays

B. play

C. played

D. playing

答案：

A. plays

B. play

C. played

(答案→)D. playing

解析：句意：小心。你看到一些男生正在打篮球吗？see sb doing sth意为“看见某人正在做某事”；属于doing做宾补；故选D。