John,look at the time.____ you play the piano at such a late hour?A.Must B.Can C.may D.need选哪个?为什么?

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John,look at the time.____ you play the piano at such a late hour?A.Must B.Can C.may D.need选哪个?为什么?
John,look at the time.____ you play the piano at such a late hour?
A.Must B.Can C.may D.need
选哪个?为什么?

John,look at the time.____ you play the piano at such a late hour?A.Must B.Can C.may D.need选哪个?为什么?
标准答案D
根据意思,John,你看看时间,你有必要这么晚弹钢琴么?
A必须,B能,C可以,D有必要