题目内容
Should the answering machine go wrong, we would ______ to replace it free of charge.
A. guarantee B. keep C. ensure D. insist
A
![](http://thumb.zyjl.cn/images/loading.gif)
练习册系列答案
相关题目
题目内容
Should the answering machine go wrong, we would ______ to replace it free of charge.
A. guarantee B. keep C. ensure D. insist
A