1) You ... be physically fit to be a firefighter. a) can b) have to c) need 2) A doctor ... often work long hours and night shifts. a) must b) can c) can't 3) A teacher ... look smart or wear a suit to work. a) mustn't b) doesn't need to c) can't 4) Self-emplyed people ... take a holiday any time they choose. a) need to b) have to c) can 5) A proper journalist (not Buzzfeed ;)) ... write things which are not true. a) needn't b) doesn't have to c) mustn't 6) Students ... hand in assignments on time. a) can b) need to c) mustn't 7) You ... take a taxi. I can drive you to work. a) can't b) needn't c) mustn't 8) Airline pilots ... have excellent eyesight. a) must b) need c) can 9) You ... leave. We're closing in 5 minutes. a) needn't b) can c) need to 10) ... call your teachers by their first name? a) Do you have b) Can you c) Mustn't you

Obligation and Permission (have to, need to, must, can)

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