单项选择题

It was not until he arrived at the station () he realized he had forgotten his ticket.

A. there
B. then
C. that
D. where

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Mary wishes that she()law instead of history when she was in college.

A. had studied
B. studies
C. has studied
D. studied
单项选择题
Of the two new teachers, one is experienced and()

A. the others are not
B. another is inexperienced
C. the other is not
D. others are inexperienced
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