Can, May or must

1) okay, everebody. You ___ leave now.
2) you ___ always follow the rules.
3) tell him he ___ wear a safery helmet when going for a ride.
4) you ___
Leave the door open, it's Hot in here.
5) check the weather before the hike - heavy Rain ___ make the road dangerous.
6) when it gets dark, you ___ switch on the Light.
7) ___ we use your car while ypu're on holiday?
8) you ___ put up your hand when you want to speak.
9) we ___ wait until the traffuc Light turn Green.
10) you ___ go on your own, but you ___ be back before it gets dark.
11) ___ i close the window? It's too cold here.
12) i ___ come right now. I'm not busy.
13) you ___ do your homework before you go out in the evening.
14) ___ you keep your eye on my rucksack? I need to go to the toilet.