—How many gold medals did China at the 2010 Winter Olympics?—Five.
Doing morning exercises is good ________ our health.
He is going to study hard at math. He wants to be ________ engineer.
--There are forty-eight students in our class. --___________.
--_____he have English ____Thursday? --Yes!
--Look at these shoes. They are only $16. --They are cheap. __________.