if you (receive) a reguest like this ,you (can not) fail to

问题描述:

if you (receive) a reguest like this ,you (can not) fail to obey it.
将括号里词的正确形式填在横线上,横线在括号单词前面
到底哪个是对的
1个回答 分类:英语 2014-11-18

问题解答:

我来补答
eceived
couldn't
假设句 用过去式
 
 
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