问题描述：
He_____there now,but I am not sure.
A.maybe B.may be C.may have been D.might have been
怎么区别.
a是副词.b是情态动词.c也许已经怎样.d跟c区别不大.
根据语意选b.
这是对的吗?
A.maybe B.may be C.may have been D.might have been
怎么区别.
a是副词.b是情态动词.c也许已经怎样.d跟c区别不大.
根据语意选b.
这是对的吗?
问题解答：
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