单项选择题

The two young tigers have just ______ for the zoo.

A. buyed
B. bought
C. been buying
D. been bought
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单项选择题
Please give details of the grant that ______ to you for your proposed study.
A. has already been awarded
B. has already awarded
C. had already been awarded
D. had already awarded
单项选择题
Bill ______ a job in a factory, but he refused to take it.
A. was offered
B. offered
C. was offering
D. had offered
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