He looks very tired because he well last night.A. didn’t sleepB. hasn’t sleptC. sleptD. sl

问题补充：

He looks very tired because he well last night.

A. didn’t sleep

B. hasn’t slept

C. slept

D. sleeps

答案：

(答案→)A. didn’t sleep

B. hasn’t slept

C. slept

D. sleeps

解析：句意：他看起来非常疲乏，因为昨晚他没有睡好。根据从句时间状语，可知从句中描述的是昨晚发生的动作，故用一般过去时态。选A。