After living with his grandparents in the countryside for ten years, the boy returned to the big city ____ his parents worked.
-You can’t imagine _______ fantastic fun web chatting is. -Really? But it may cause a lot of trouble sometimes.
Parents are advised to take pressure_____a child and give him or her some encouragement before an exam.
Some people would rather ride bikes as bike riding has _______ of the troubles of taking buses.
In America, if _______ friend has invited you to drop in at any time, it is _______ best to call before visiting to make sure it is convenient for him.
People in industrial countries take in _________as they actually need every day.