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    精英家教网 > 高中英语 > 题目详情
    —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 throughB．might go through?
    C．ought to have gone throughD．must have gone through?
    D　
    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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