高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
We are sorry for the short delivery by 20 tons. This _ _ _ _ _ _ _ _ _ _ you some trouble in meeting orders of your clients.
A.must have caused
B.has caused
C.must cause
D.will be caused
We are sorry for the short delivery by 20 tons. This _ _ _ _ _ _ _ _ _ _ you some trouble in meeting orders of your clients.
A.must have caused
B.has caused
C.must cause
D.will be caused
参考答案：
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