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:
该题考查情态动词的用法。情态动词+have done表示对过去的推测。句意为:“为研究野生动物,这个女生物学家在回来前在非洲待了13年。”“哦!她一定克服了许多困难。”
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