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I asked her _____I could help her. A.that B.what C.which D.if

题目详情
I asked her _____I could help her. A.that B.what C.which D.if
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答案和解析
答案:D.if
因为后面的句子意思完整,这里只适合填一个表示条件的if就可以.
翻译:我问她我是否可以帮助她.