You ____ eat some candies time to time. Kids ____ be carefull when crossing the road. People ____ drink alcohol and drive! You ____ smoke if you are under 18 years old! You ____ go for a walk in the mountains, if you want to. Guests ____ drink enough water when doing sport. My sister ____ visit her friends after school. Everybody ____ go ice-skating. You ____ read in the dark. It is bad for your eyes. Children ____ drink too much coke. It's not healthy! You ____ play computer games all day. We ____ go to play football when it is nice weather . When you ride a horse, you ____ wear a helmet. You ____ ski without a helmet. You ____ play tennis in winter, but you ____ be in a hall.

Must, can, mustn't - Bloggers 2 U 1

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