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單項(xiàng)選擇題

Unfortunately，quite a number of the users a redissatisfied（）your Straw Baskets supplied to Order No.T90.

A.to
B.with
C.on
D.above

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We are pleased to know that you have planned to come to the Autumn Guangzhou Fair.We wish to discuss with you some other important things if you could come（）your earliest convenience.

A.by
B.on
C.in
D.at

單項(xiàng)選擇題

We regret that it is necessary to complain（）the non-delivery of the10，000 tons of sugar under Contract BC-023.

A.concerning
B.about
C.regarding
D.with

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