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單項(xiàng)選擇題To qualify for a promotion, （）to exceed the quota.

A.the best thing he could do was
B.he did his best
C.all he could do was
D.his best thing was

1.單項(xiàng)選擇題Your firm has been recommended to us by AMK company, （） we have done business for many years.

A.with whom
B.with who
C.whom
D.who

2.單項(xiàng)選擇題We find （）necessary to stress the importance of making punctual shipment within the validity of the L/C.

A.how
B.that
C.it
D.us

3.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

4.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

5.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

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