问题描述:
( )smoke so much?I just don't know how you...下列选项哪个正确,为什么?
( )smoke so much?I just don't know how you ( ) stand it for so many years.
A Did he use to ...may B Used he ...can
C Did he use to ...can D Used he to ...may
为什么不选D,used to 在什么情况下作情态动词使用?
( )smoke so much?I just don't know how you ( ) stand it for so many years.
A Did he use to ...may B Used he ...can
C Did he use to ...can D Used he to ...may
为什么不选D,used to 在什么情况下作情态动词使用?
问题解答:
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