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---Do you know how this disabled man succeeded in running such a big company?
--- I don’t know , but I think he __________ many difficulties.

A.could have gone through B.must have gone through
C.might go through D.need go through

B

解析试题分析:句意:你知道这个残疾人是如何成功地运营这么一个大公司的吗?我不知道,但是我想,他肯定经历了许多困难。问句中succeeded用的是过去时,可知答句中应该是对过去情况的推测。A、B两个选项都可表示对过去情况的推测,但A选项的语气很弱,意为:也许经历了不少困难吧。而根据问句中所说的残疾人成功运营大公司,应该推断他肯定经历了不少困难。故选B。
考点:考查情态动词+have done的用法。

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