Topic "the best moments of my school life" надо ! !

hi!

i have got  your letter! i was glad to hear from you again! thankyou for your invitation. but i am compelled to upset you, i can't go with you to the concert because of my parents who are going  to the cinema at the same time and i have to stay with my little brother. next week i wiil be free and we will be able go to another concert. thanks for understanding!  

yours,

nina

you mustn't open the door for a stranger. a stranger should trick you. you might answer the phone. you don't have to tell everybody that you are home alone . you must know your parents' phone number. it have to be wise to know your neighbours .