飞机厨房和厕所洗脸盆排放的水如何排出

This is the biggest laboratory （）        we have every built in our school.

Have you seen the girl   （）     ?

My hometown is no longer the same    （）     it used to be.

The brave man,      （）    the tiger was shot, is a good hunter.

I, （） your good friend, will try my best to help you out.

You can take any seat    （）      is free.

Can you lend me the novel       （）  the other day?

Do you remember the name of the company （）      ?

He met my brother, from    （）      he got the news of my marriage.

The first time         （） I saw Premier Zhou was in 1958.