The headmaster went to Washington _____ the first time last September. [ ]A.

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The headmaster went to Washington _____ the first time last September. [ ]
A. for
B. on
C. at

答案

举一反三

The car runs _____ 80 kilometers an hour. [ ]
A. at
B. in
C. on

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I don"t know the answer _____ the question.

[ ]

A. to
B. of
C. for
D. with

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Spring is the best season in Beijing. It usually comes _____ March.

[ ]

A. on
B. in
C. to
D. at

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—Who was it _____?
—Thomas Edison.

[ ]

A. invented by
B. invented from
C. invented of
D. invented in

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— _____ my teacher"s help, I made great progress.
—You should thank her.

[ ]

A. Under
B. With
C. Without
D. For

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