— How nice the fish tastes! Could you tell me who taught you to cook it?
—To be honest, I learnt it watching TV. I learn to cook many dishes TV.
| A．by； in | B．by； on | C．in； on | D．in； in |
—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 |
—Must I hand it in today？
—No，you ________．You can do it tomorrow．
A．mustn’t
B．can’t
C．needn’t