单词：given back
na. 归还；返回；后退；凹陷
given back的用法和样例：
例句
- I must give back the two books to the library before Friday.星期五之前我必须把这两本书归还图书馆。
- A letter for me left, by mistake, at my neighbor's house was kept for two days and then given back to the postman.我的一封信误投给邻居了，在那里放了两天之后又退给了邮递员。
- Has he given back the tools he borrowed from you?他向你借的那些工具归还了没有？