-- Must I come here at eight o’clock?
-No, you ____. You may come a little later.
| A．mustn’t | B．needn’t | C．may not | D．can’t |
— May I smoke here?
—Sorry, Look at the sign. you mustn’t do it.
—You will fail in the exams ________ you work hard.
—I know, Dad. I'll try my best.
A. if B. unless C. as long as
We usually ________ different clothes in the shop to decide which one to buy.
A. try on B. take off C. sell out
—__________ will you finish doing your homework?
—In half an hour .
A. How soon B. How long C. How often
—Can I have my mobile phone back? I’ll need it now.
—Ok, here it is. It ______ just before you arrived.
A. mended B. is mended C. was mended