would have这里解释是本该起床了其实未,那might have这里仅仅是情态动词吗
题目
would have这里解释是本该起床了其实未,那might have这里仅仅是情态动词吗
---Has your father got up?
---Sorry,I’m not sure.He ______ got up.Pleasego and see for yourself.
A.must have B.can’t have C.would have D.might have
答案
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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