We are sorry for the short delivery by 20 tons. This ( ) you some trouble in meeting orders of your clients.<br />A.must cause<br>B.must have caused<br>C.has caused<br>D. will be caused

注意：此页面搜索的是所有试题

题目内容（国家开放大学英语语法）

We are sorry for the short delivery by 20 tons. This ( ) you some trouble in meeting orders of your clients.
A.must cause
B.must have caused
C.has caused
D. will be caused

参考答案

随机试卷

西安交通大学--路基路面工程学习指南