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英语
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How long have you been ill
A.Since last week B.A week ago C.Once a week
以前学过,忘了,为什么选A呢?我知道选A,但是因为要讲课,相关语法忘了,现在做英语题目都是凭感觉做的,谁能把相关知识点说一下
人气：136 ℃ 时间：2020-03-29 18:29:08
解答
since用在现在完成时中问句中的have been是关键词
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