Перевести подалуйста 1.you have to/may be over 10 years old to stay at home alone.2. you mustn't/don't have to open the door for a stranger3.a stranger may/should trick you.4.you mustn'/may tell anyone that you are at home alone 5.you must/might be sure you know your parents' phone number.6. it must/have to be useful to know people around you
