问题描述： teachers/be aware of /difficulties of 越简单越好. 1个回答 分类：英语 2014-11-02 问题解答： 我来补答 Teachers are aware of difficulties of the problems.很高兴为你解答!老师祝你学习进步!请及时采纳哦!多谢你的问题!^_^ 展开全文阅读
