我必须在周日前将书还回图书馆。

I have to return the books to the library before Sunday.

youdao

他们在上周日前就完成了任务。

They had finished their work by last Sunday.

youdao

我们决定周日前完成这项工作。

We determine to get the work done before Sunday.

youdao

我们决定周日前完成这项工作。

We determine to get the work done before Sunday.

youdao