飞机通电状态下，在饮用水面板操纵放水时

The Second World War     （）     millions of people were killed ended in 1945.

I’ve read all the books      （）    were borrowed from the library.

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 （）      ?