Was it at the Olympic Games ______ were held this year ______ Liu Xiang got a metal?

Excuse me, haven’t you learned the new law Everyone in a car must wear the seat belt. — Sorry, we won’t do that again.

Lunch—No,thanks.I .

Cold ______ the night air was, he slept soundly because he was so tired after working for a whole day.

My brother has been teaching ________ he was 21 years old.