高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
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.as
D.since
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.as
D.since
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