题目内容
(请给出正确答案)
[单选题]
______ you accept our offer, please cable us for our confirmation. A、until B、unless
A.until
B.unless
C.if
D.as
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A.until
B.unless
C.if
D.as
第2题
We shall be glad if you will agree to ship the goods to us_____ before on Cash Against Documents Basis.
A. for
B. because
C. since
D. as
第4题
We regret we cannot ____ ourselves of your offer of these goods because we are buying to better advantage elsewhere.
A. make
B. have
C. avail
D. advantage
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