We regret the need for you to write to us and hope the steps we are taking ( ) the safe arrival of all your orders in the future.<br />A. insure<br>B.assure<br>C.ensure <br>D.sure

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题目内容（国家开放大学英语语法）

We regret the need for you to write to us and hope the steps we are taking ( ) the safe arrival of all your orders in the future.
A. insure
B.assure
C.ensure
D.sure

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西安交通大学--计算机网络与多媒体技术