问题描述: It is __Tom oftrn fails in maths __makes his mother disappointed.两个空为什么都填that 1个回答 分类:英语 2014-10-03 问题解答: 我来补答 (It is) that Tom oftrn fails in maths (that )---强调句式,可省略,便于分析句子结构 makes his mother disappointed.化简 that Tom oftrn fails in maths (主语.为一件事,谓语单数) makes his mother disappointed. 展开全文阅读