---May I surf the Internet now?
---No,______ you have finished doing the dishes.
| A．unless. | B．if. | C．because. | D．when |
—______ will the breakfast be ready?
—Just a minute.
A. How much B. How long C. How soon
.—I'm so sorry about last night. I was so impolite.
—______.
A. Never mind B. Go ahead C. My pleasure
Parents often ______ their children______ some good living conditions.
A. offer; to B. provide; for C. provide; with
—Would you mind ______ now? It's already midnight.
—Sorry, I won't.
A. not singing B. not to sing C. don't sing
He can do what he can______ the children in his neighborhood.
A. help B. to help C. helps