问题补充:
What do you think at this time last night?
A. has he done
B. he has done
C. was he doing
D. he was doing
答案:
A. has he done
B. he has done
C. was he doing
(答案→)D. he was doing
解析:考查时态。句意:你认为昨天晚上的这个时候他在做什么?根据句意说明是指在昨天晚上的这个时候,这是一个过去的时间点,所以使用过去进行时;故D正确。