题目内容

His first response was to say no. Later, ________, he changed his mind.

A. still
B. or
C. however
D. and

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The days were short, _____ it was now December.

A. or
B. and
C. for
D. but

Not only you but also he ________ football.

A. like
B. likes
C. are liking
D. am liking

Give him an inch _____ he'll take a mile.

A. but
B. and
C. or
D. so

(2空)一对圆柱齿轮正确啮合的条件是:(________)和(________)。

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