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little has been done that is helpful to our work其中的 that能换成all that 么?为什么?

分类: 作业答案 • 2021-12-28 10:41:26

问题描述：

little has been done that is helpful to our work其中的 that能换成all that 么?为什么?

答

不能 that 是 little 代词的定语从句的先行词不能换成all that