. — She looks very happy. She have passed the exam.— I guess so. It’s not difficult after

发布时间：2020-08-17 14:22:46

. — She looks very happy. She      have passed the exam.
— I guess so. It’s not difficult after all.
A. should
B. could
C. must
D. might

网友回答

A. should
B. could
(答案→)C. must
D. might
解析：“must+have+过去分词”表示对过去情况的肯定推测。由于“她看上去气色不错”，而且“考试也不难”，所以她一定是通过了考试。
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