问题描述: The boy ________is helping the old man is John's brother用疑问代词填空 1个回答 分类:英语 2014-11-17 问题解答: 我来补答 The boy that /who is helping the old man is John's brother这是一句定语从句,填的是关系词先行词【boy】在从句中作主语,又指人,所以用【that/who】 展开全文阅读