Look, so many people are running out of the station. I wonder what ________.

They still go on working, ________ they feel tired.

You can come ______ on Tuesday _______ on Friday, but whichever you choose, please let me know.

After a serious illness, he finally the importance of health.

Auatar（阿凡达）is such _________ wonderful science fiction movie that I want to see it _________ second time．