题目内容

9.Our quotation ____30 tons of Shandong groundnuts is valid for 10 days.

A.to
B.after
C.if
D.for

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10.We can supply this type of machine ____ very favorable terms.

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

11.The containers will leave our plant ____ rail.

A.by
B.in
C.for
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A.but
B.yet
C.with
D.during

13.It is possible to extend this Letter of Credit, whichexpires ____ January 28.

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