单项选择题

We were watching TV together ______ a stranger came in.

A. while
B. when
C. that
D. where
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单项选择题
It is common sense ______.
A. that all we have to eat to live
B. which we all have eaten to live
C. that we all have to eat to live
D. which we all have to eat to live
单项选择题
I’ll never forget the hotel ______ last year.
A. I stayed
B. that l stayed
C. I stayed at
D. where I stayed at
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