问题描述: The real reason____ i left early was that i was feeing sick.A .why B.for什么时候用for? 1个回答 分类:英语 2014-09-22 问题解答: 我来补答 答案:A先行词是reason时,关系副词用why.for可作介词,也可以作连词,但是不能作关系副词,所以这里答案B错误. 展开全文阅读