1) I think you ...................stop at gas station to fill the gas tank before you travel. a) should b) have to c) must d) can 2) Look at the sign! You ............. take photos in the gallery. a) mustn't b) shouln't c) needn't d) don't have to 3) You ............. stop if the traffic lights turn red. a) can't b) can c) should d) must 4) You .................. turn on windshield wiper while raining. a) mustn't b) can't c) should d) shouldn't 5) You .............. smoke in the hospital. a) mustn't b) don't have to c) have to d) can't 6) Ali ............ park his car in the sun. a) mustn't b) needn't c) can't d) shouldn't 7) You ............. pay a fine when you receive it. a) mustn't to b) needn't c) should d) must 8) You look tired. I suppose you ............. take a break. a) should b) must c) have to d) don't have to 9) You ................ drink any more of this cola. You're going to get sick. a) can b) must c) must not d) shouldn't

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