题目内容

On April first they flew to Beijing, _ they stayed several days.

A. where
B. when
C. which
D. there

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Is this the school __you worked during the summer vacation?

A. that
B. which
C. when
D. in which

That is the reason ____he wasn't here yesterday.

A. which
B. why
C. on which
D. in which

I still remember the day ___I first came to the college.

A. at which
B. in which
C. on which
D. which

Can you tell me the name of the factory_­­__ you visited last week?

A. what
B. where
C. /
D. when

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