There is _____ wrong with my computer. It doesn' t work now . I ' ll buy a new one .A.nothing. B. something. C. everything.
Things are ____ on the moon ____ on the earth .
We need friends to ________, or we will feel ________.
Could you tell me_____?
The_______ you are in the exam, the_______ mistakes you will make.
--are the Olympic Games held? --Every four years.