May I go for a walk? - No, you must stay at home. It is very cold. - You must do your homework. - Can I play with my friends after that? - Of course, you can go to the zoo. You can ride pony there. - Can I give water to the canary? - Yes, you can. You must give clean water to the canary every day. Can I give a cake to the canary? - No, you can\'t give cakes to the canary.