Teenagers should not _____ .
| A．allowed to drive | B．be allow to driving |
| C．be alloweddriving | D．be allowed to drive |
She often ________ Chinese with her classmates．
| A．practice speak |
| B．practices speak |
| C．practices speaking |
| D．practice speaking |
—Can we run across the road now？
—No，we ________．We have to wait until the light turns green．
| A．needn’t |
| B．mustn’t |
| C．couldn’t |
| D．shouldn’t |
—May I play computer games now，Mom？
—No．You ________ finish your homework first．
| A．must |
| B．can |
| C．could |
| D．may |
—May I take some pictures here？
—Sorry，you mustn’t．Please look at the sign．It says“________”．
A．NO PHOTOS
B．NO TALKING
C．DANGER
Hurry up，or you ________ catch the train．
| A．can’t |
| B．needn’t |
| C．mustn’t |
| D．shouldn’t |