超星 - 单选 2 - 查题吧

单选题

If I ___________his email address, I would have sent him a message yesterday.

A. know
B. knew
C. had known
D. have known

单选题

Only after secretary saw the train disappear in sight,_____ the railway station.

A. he lives
B. has he left
C. he left
D. did he leave

单选题

We take a great pride in our campus, _____ is one of the most beautiful university settings in the country.

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

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