—Would you mind _______here?—I’m sorry about that. I’ll go somewhere else.
Tom studies _______. He _______plays with his friends.
—do you exercise? —Hardly ever.
I have ____________ homework to do and I’m _______ tired now.
The problem is _________ difficult ________ students can solve them.
---Why don’t you go out to play, Rose? ---I’m afraid I can’t. I have much homework _______.