1. b   2. r   3. d   4. n   5. p   6. c   7. g   8. l   9. a   10. o   11. f   12. j   13. m
14. k   15. i   16. e 17. q

3
1. Jim is my classmate who lives next door
2. Dean is my friend who is from the USA
3. Charlie Chaplin has a lot of films which are funny

4
1. It's necessary to have a map in an unfamiliar city
2. Smoking affects health
3. Going in for sports is useful
4. It's sad to be alone

2
At the beginning of the 19th century a little boy was born in the family of John Dickens, a clerk at an office in Portsmouth, and was named Charles. He had a sister who was older than himself, and there were several other children in the family. 

When Charles was seven, he was sent to school. He was not a strong child. He did not like to play cricket or football and spent all his free time reading. In 1821 the family went to London, and little Charles left behind him the happiest years of his childhood. 

His father was in money difficulties, and the family became poorer and poorer. The boy had to give up his studies.