高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
We appreciate your order, _ _ _ _ _ we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments.
A.or
B.but
C.and
D.nor
We appreciate your order, _ _ _ _ _ we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments.
A.or
B.but
C.and
D.nor
参考答案：
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