他把文件塞进公文包就离开了。

He ___stuffed the papers ___into his briefcase and left.

这个箱子绝对满了——我再也塞不进任何东西了。

This case is absolutely full - I can't ___stuff another thing ___into it.

匆忙之中，她把旧信件塞到了一排书后面。

In a hurry, she ___stuffed the old letters ___behind a row of books.