—Why didn’t you go to the cinema with us this afternoon?—I ___________ at the station for my uncle from Beijing.
There is ________ useful book on the desk, _________ useful book belongs to my brother.
Could you tell me________?
Smoking will_______ your health.
Now many people are________ in playing_______ games on the Internet.
It is important_______ you_______ out for a walk after supper.