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There was one boy named Chris. He was really angry at his mother (it was such a long time ago that he doesn't even remember the reason). Chris went outside. It was getting late but he didn't come home wanting his mother to cry. The boy was walking and walking until he met a stranger who asked Chris if he was lost. He didn't answer. The stranger smiled creepily and gave the boy something which made him fall asleep. When he woke up, there was an old man who said "you're my slave now boy". Chris doesn't like to talk about that time. The man didn't beat him or something like that but he missed his home a lot. Especially his mother who wasn't treated the way she deserved. And one day after the old man died, Chris could run away. Going through hell, he finally managed to come home. There was his mother who cried as soon as she saw her lost son.

1. Sara hasn't sent a letter to parents yet.
2. Where are your friends — They are arranging the party.
3. Look! What a nice dress! She has made it herself. She wears it every day.
4. We won't sing this song in two days.
5. His son didn't become a famous writer last month.
6) What time will Nina get up next week?
7. My brother fell on the road and hurt his leg last week.
8. They didn't buy a jacket a year ago.
9. I have never been to London.
10. His mother has found him. He was at school.
11. You will go abroad next summer.
12. Did our teacher leave the school last month?
13. Will your brother take us to the Zoo tomorrow?