The whole class is working hard preparing for the exams.

问题描述:

The whole class is working hard preparing for the exams.
为什么用preparing?
1个回答 分类:英语 2014-11-26

问题解答:

我来补答
working hard是插入语,主句为The whole class is preparing for the exams,所以is preparing意思是"正在准备",是现在进行时.
 
 
展开全文阅读
剩余:2000
上一页:示意图也请画出
下一页:拜托详细解答