问题
选择题
I have been looking for Michael for a whole day. Where ______ he have gone?
A．should
B．can
C．must
D．may
答案
答案：B
考查情态动词表推测的用法。can 表推测常用语疑问或否定句中，can have done 表示对过去的推测，句意：我一整天一直在找米莎尔，他可能会去哪呢？所以选B。
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