问题
选择题
It _________have rained last night, for the ground is wet.
A．may
B．should
C．will
D．must
答案
答案：D
句意：昨晚肯定下雨了，因为地面是湿的。Must have done肯定做了某事。所以选D。
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It _________have rained last night, for the ground is wet.
A．may
B．should
C．will
D．must
答案：D
句意：昨晚肯定下雨了，因为地面是湿的。Must have done肯定做了某事。所以选D。