Paul does nothing but all day long.A. playB. to playC. playingD. played

问题补充：

Paul does nothing but all day long.

A. play

B. to play

C. playing

D. played

答案：

(答案→)A. play

B. to play

C. playing

D. played

解析：本题考查非谓语动词。句中考查nothing but除了，前有助动词do，后面省略to。句意：Paul除了完了一整天什么也没有做。