I’m tired out．I stayed up the whole night, ______ for my midterm math exam．

Director Zhang Yimou often has his films _________ local contents, which foreigners are not familiar _________. 

 Often they give up sport, _________they have no time _______after their work.

The next thing he san was smoke _____form behind the house.

South Korea is a world leader in the telecommunications industry and Sumsung is already a name _________ throughout the world.