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單項(xiàng)選擇題

We regret （） that we can’t accept your offer.

A.of saying
B.for saying
C.about saying
D.to say

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單項(xiàng)選擇題

（） quality and prices are satisfactory, there are prospects of good sales here.

A.Provided
B.Even
C.Though
D.Unless

單項(xiàng)選擇題

The company in question does steady export business, （） satisfactory results in overseas markets.

A.show
B.to show
C.showed
D.showing