Relier Pairs CAN AND MUSTVersion en ligne REVIEW CAN MUST CAN'T AND MUSTN'T WITH IMAGES par Claire Manners 1 2 3 4 5 6 7 8 Dogs mustn't lick your face. Dogs can't drink alcohol. Dogs can help people with mobility. You must feed your dog twice a day. Your dog can't eat the cushions. You can teach dogs to do tricks. You mustn't leave a dog alone for more than 3 - 4 hours. You must give your dog their own space.