House prices increased __________ an average of 23% in 1998.A. to B. by C. at
I have to finish my homework first_____ cleaning up the room.
The Olympic champions_____ all the audience excited at 2004 Olympic Games.
Mr. Zhou was really anxious _____he can’t find his car.
— What would you do if you won the lottery? — I would give it_____ medical research.
That notebook _____ John’s. It has his name on it.