Li Lei likes playing sports. He always spends 40 minutes ______ basketball after school every day.
— I am like a cat on hot bricks. There are so many problems that I don't know____ to deal with them. — Calm down first. Let's see what I can do for you.
— Your mother plays tennis very often, doesn't she? — Well, she doesn't like it now. But she _____________.
— is the population of your city? —There are about four .
—What the number of the students in your class ? —About 60 . A number of them girls .
Why not ____ your teacher for help when you can't finish _____ the story by yourself?