Sorry. No dogs are permitted here. You_______ your dog to school. (don't have to bring / must not to bring / must not bring / doesn't have to bring)
MUST NOT BRING
Exercise is good for you. Everybody_____. (must exercise / should exercise / has to exercise / have to exercise)
SHOULD EXERCISE
I'm sick. According to my doctor, I _______ go to work today. (should / don't / can / shouldn't)
SHOULDN'T
