2)You must tell your parents the truth.
3)You must not talk with your mouth full of good.
4)Whan someone gives you a present,you must say thank you.
5)In Britain, you can put your elbows on the table when you are eating.
6)You must be careful in the street when it is dark.
7)He must know about the rules of the game.
8) She must be at home by 6.00 p.m.
9)I keep losing my keys.What can i do?
Объяснение: