—Did Ann fail in English?
—She . Don't you notice that she looks depressed?
A. might
B. must
C. may have
D. could have
网友回答
A. might
B. must
(答案→)C. may have
D. could have
解析:C 考察情态动词。句义:—安妮通过了英语考试了吗?—她没有通过。你没有看到他很失落吗?由句义可知,这是对过去事情的推测。所以排除AB项。D项意为“本来能够通过考试”。