--Sorry, sir. I made a mistake again.
--_________. Practice more and you will do better.
| A．Never mind | B．I'm not sure |
| C．You're welcome | D．Don't mention it |
—_____ you _____ your homework yet?
—Yes, I _____ it ten minutes ago.
| A．Did; do; finished | B．Have; done; have finished |
| C．Have; done; finished | D．Will; do; finish |
Now most families have only one child _____ our country’s one-child policy.
| A．so | B．because |
| C．because for | D．because of |
— Hello, this is Tom. Is Jack in?
— Sorry, he to his uncle’s home. May I take a message?
| A．has been | B．go | C．is going | D．has gone |
—I’m worried about tomorrow’s math exam.
— ______ . I’m sure you will make it.
| A．Bad luck | B．What a pity |
| C．Take it easy | D．Don’t mention it |
Mrs. White _______dinner when her son came home.
| A．is cooking | B．was cooking |
| C．are cooking | D．were cooking |