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英语
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i very sorry, ____i had to help my mother because she was ill.
A:but
B:or
C:and
D:so
选什么,求解 在线等.要解释
人气：128 ℃ 时间：2019-08-21 03:28:03
解答
A
这是惯用方法,记住就行了,没什么说法.
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