С, нужно праыильно выбрать. 1.you must/needn not stop at the red light 2.pilots have to /can not wear a uniform 3.you must not/ don not have to water the plants. i ll do that 4. he is i ll. he must/ has to see a doctor 5. you must not/ don not have to eat in the classroom. it is not allowed 6/ he has to/can not do his homework every day.