问题补充:
—I didn’t see her yesterday.
—Of course, you , because she had gone to a trip.
A. can’t
B. may not have
C. can’t have
D. mustn’t have
答案:
A. can’t
B. may not have
(答案→)C. can’t have
D. mustn’t have
解析:从下文he had gone to a trip,可以断定你不可能见到他,用can’t,判断时态是指过去,用can’t have (seen)。