单项选择题

He ______ a good knowledge of English by careful study.

A．gained
B．obtained
C．earned
D．acquired

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单项选择题

Due to the great difficulty in business, he decided to ______ the payment of the bills.

A．infer
B．defer
C．confer
D．prefer

单项选择题

I'd like to see ______ Mr. Smith, please. Do you mean ______ Mr. Smith ______ stage manager

A．the, the, the
B．/, /, the
C．/, /, /
D．/, the, the

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