Wereallydon'tknow________．A.toc

发布时间：2020-07-28 12:41:44

We really don't know ________．A.to choose whatB.which choseC.which one to chooseD.to choose which one

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C解析疑问词+动词不定式构成一种特殊的动词不定式短语，可在句中作主语，宾语，表语等成分．
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