—Excuse me, may I sit here? — . The girl on the seat will return soon. A. Yes, please B. I’m afraid not C. No, thanks
Our teacher said sound___much more slowly than light.
Will you please show me the way to the only tall building ___stands near the post office?
—Look! The boy in the white shirt ___be Tom. --It ____be him. I saw him enter the library just now.
Students should do everything they can __their study.
If you are a little careful, I think you can _____the problem.