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i lost my friend's bike and i really don't know_ a.what to do b.how to do 个人认为选b答案是什么求解

分类: 作业答案 • 2021-12-19 11:43:06

问题描述：

i lost my friend's bike and i really don't know_ a.what to do b.how to do 个人认为选b答案是什么求解

答

do是及物动词需要what来做它的宾语