John look at the time. you play the piano at such a late hour?A. MustB. Can C. MayD. Need

问题补充：

John, look at the time. you play the piano at such a late hour?

A. Must

B. Can

C. May

D. Need

答案：

(答案→)A. Must

B. Can

C. May

D. Need

解析：考查情态动词。Must偏偏，非得；句意：John,看看时间，你非要在这么晚的时候弹钢琴吗？