They didn't start work ___their teacher came back这个空只能填until么?能填while么?

分类: 作业答案 • 2022-04-15 18:02:14

问题描述：

They didn't start work ___their teacher came back
这个空只能填until么?能填while么?

答

记住 didn't until也是固定搭配

答

until
not until直到……才……
直到他们老师来了他们才开始学习