I THINK.THEY CANNOT FINISH THE WORK TODAY .(合并为一句

问题描述:

I THINK.THEY CANNOT FINISH THE WORK TODAY .(合并为一句

I think that they can't finish the work today.
或者I don't think they can finish the work today.但题目是 I------ -------------They-------finish the work today多一个空格那就是 I do not think they can finish the work today.为什么要则么做