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單項(xiàng)選擇題

I am proceeding（）reduced speed.

A.at
B.with
C.on
D.within

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單項(xiàng)選擇題

Get everything ready（）sailing.

A.on
B.ahead of
C.prior to
D.in front of

單項(xiàng)選擇題

Captain said that very clearly so that nobody was in any（）about what was meant.

A.doubt
B.question
C.wonder
D.consideration