The two dogs started to fight, so we tried to _____ them.
A new learning center has been built in the school, ______ students to get to know the world more easily.
—Something smells really good in here!—You ______ my Easter cookies.Have one!
—Daddy, how much do you earn an hour? —If you ______ know, $20 an hour. A. may B- must C.can D.should
I ______ for six months.I'm really out of shape.
—Could you give me some advice on getting a job?—First, find out ______ you like doing best.