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She had studied Russian for three years _____ she began to learn EnglishA.before B.if C.after D.because 我觉得是C,but我心里有个疑问,要是真的选C,如果再多一个选项：since 那么选since还是after

分类: 作业答案 • 2022-01-02 15:31:38
问题描述：

She had studied Russian for three years _____ she began to learn English
A.before B.if C.after D.because
我觉得是C,but我心里有个疑问,要是真的选C,如果再多一个选项：since 那么选since还是after

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