If you make_ _ most of forty-five minutes classes day after day, there will be ______switch in grades.
Go and do it right now, and you _____ have my help when in trouble.
— What do you think we should do after dinner? — Why don't we get _______ beer at the Karaoke bar down the street? It is kind of _______ fun to hear all the band singing.
-______, Rome was not built in a day. -So you mean that it was not built at night.
The house ______ Mr. Green's family for 50 years will be pulled down next week.
In some parts of China, winds ______ electricity instead of coal.