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英语
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no one could __ failed to notice the fact that ///is a grave problem,这边是用has还是have
为什么呢
人气：471 ℃ 时间：2020-03-26 01:24:23
解答
have
could have +过去分词 - 虚拟语气的固定形式
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we have a good request we can't fail to obey it we have a good request we can't fail to obey it
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noboby could have fail to.其中 是用have还是has呢
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__ he fail to come over,what could we do without him?For you see,we don't have the key to the lab!
读一本书已经读的页数是未读的百分之二十如果再读240页那么读的页数是没读的5倍这本书共有多少页
英语翻译
do did does was的用法
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