42. —The ground is wet .—It must have just rained , --------

学习时间:2026-04-04 17:07:01 阅读：8665

42. —The ground is wet .—It must have just rained , _____________ ?A . hasn’t it B . didn’t it C . mustn’t it D . isn’t it

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2026-04-04 17:07:01

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这里的 must have rained是 must + 完成时态,表示肯定地猜测,理解为一般过去时,就是rained所以,答案B肯定猜测：must be可能猜测：may be不可能：can't be这三个用于一般现在时