题目内容
—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
— Oh, dear! She _________ a lot of difficulties!
A. may go through B. might go through
C. ought to have gone through D. must have gone through
D
解析:
由上文的stayed可知,此题是对过去情况有把握的肯定推测。句意为“那个女生物学家呆在非洲研究野生动物13年才回来。”“天啊!她一定经历了不少苦难!”
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