单项选择题

He has two Chinese-English dictionaries, ______ were bought last week.

A．two of which
B．both of which
C．both of them
D．all of them
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单项选择题
He didn't know ______ or go home.
A．to wait
B．if that he should wait
C．if to wait
D．whether to wait
单项选择题
Mr. Bush ______ gardening as his hobby shortly after he retired from the General Motor last year.
A．took up
B．took back
C．took in
D．took over
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