问题描述： his cousin failed in the exam because of his c____ 1个回答 分类：英语 2014-12-07 问题解答： 我来补答 carelessness 首先知道这个地方是个名词. 然后分析语句.考试失败了因为什么. 一般考试失败就是因为粗心.careless的名词是carelessness 展开全文阅读
