单项选择题

John made ______ keys for the house: one for his wife and one for himself.

A. deviate
B. duplicate
C. delicate
D. diligent
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单项选择题
We resumed our work after the break with ______ energy.
A. relieved
B. renewed
C. termed
D. reinforced
单项选择题
A long line of traffic had to wait at the ______ until the train had passed.
A. crossroads
B. junction
C. level-crossing
D. bridge
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