Heto school so he turned off the alarm clock and went back to sleep.A. needn’t have goneB.

问题补充：

Heto school,so he turned off the alarm clock and went back to sleep.

A. needn’t have gone

B. hasn’t needed to go

C. needn’t go

D. didn’t need to go

答案：

A. needn’t have gone

B. hasn’t needed to go

C. needn’t go

(答案→)D. didn’t need to go

解析：考查情态动词用法。Needn’t have done本没有必要做某事；didn’t need to do 不必做某事；本句并不是虚拟语气，是一个陈述语气。句意：他不必去学校，于是他把闹钟关掉了回去睡觉。故D正确。