单项选择题

I don’t know ______ he will come tomorrow, ______ he comes, I’ll tell you.

A. whether; Whether
B. if; Whether
C. if; If
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单项选择题
John hasn’t told me ______ he wanted to go.
A. what

B. where

C. when
单项选择题
Mr. Lee never has a cup of coffee after a meal, ______ he
A. has

B. does

C. doesn’t
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