HehasdifficultywithhisEnglish;________,heworkshardandismakingrapidpro

发布时间：2020-08-06 19:36:07

He has difficulty with his English; ________, he works hard and is making rapid progress．A.andB.butC.howeverD.yet

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C解析只有however后面可以用逗号和主句或分句分开。
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