The fresh air _____ our health and we _____ it.
Companies in Zhongguancun all have their own characteristics, but they all share ______ spirit of creativity and scientific skill that have made Zhongguancun________-success.
---------Did you have a good time in Thailand last week? ---------___________-.It was too hot.
--Thank God you’re safe!--- I stepped back, just _______ to avoid the racing car.
Not until I came home last night ________ to bed.
Work hard when young, ______ you will regret.