return empty container

例句：

1. 1.After the meeting, he returned to his office.
   会议结束后，他回到了办公室。
2. 2.The thief returned the stolen items to the owner.
   贼将被盗物品归还给了主人。
3. 3.She returned the borrowed book to the library.
   她把借来的书还给了图书馆。