Though my grandmother is old, her voice ______beautiful.
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.
Millie can’t ride a bike, so she _______ goes to school by bike.