1. You mustn’t park in this street.
2.You shouldn’t swim immediately after a meal. 
3.You must take this medicine three times a day.
4.You should listen to the weather forecast before going camping. 
5.You should take exercise every day.
6.You mustn’t drink the water there. It will make you ill. 
7.You shouldn’t eat lots of sweets.
8.You mustn’t use your mobile phone in class.