题目内容

3.We should be pleased to send you a sample ____ our own expense.

A.at
B.in
C.against
D.of

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4.The letter we received yesterday is an inquiry ____ discounts.

A.for
B.after
C.before
D.unless

5.In terms of quality, our silk piece goods are superior ____ other brands.

A.to
B.better
C.for
D.above

6.Goods will be shipped ____ 30 days after receipt ofthe L/C.

A.to
B.on
C.for
D.within

7.No discount will be granted ____ you place an order for more than 1000 tons.

A.so
B.till
C.unless
D.nevertheless