It’s easy to make friends, but it’s difficult to keep the ________ longer.
A: Is there a computer in your class? B: ____ .
A: ____ boys and girls are there in your class? B: There’re 21 boys and 20 girls.
—___________? —He is Andy’s father.
I’m not fit. I need to eat fast food and exercise .
Jim , __________in the classroom. It's not polite.