Look at the pictures and circle the correct answers.

a) You mustn't smoke. 1 a) You must be quiet. 2 a) You mustn't be a member. b) You don't have to be a member. 3 a) You mustn't drink the water. 4 a) You don't have to ring. 5 a) You must play ball games. b) You mustn't play ball games.