The key answer of exercise 5

a)

1. 's
2. 's
3. 's
4. 's
5. 's
6. 's
7. 's
8. s
9. s
10. s
11. 's
12. 's
13. 's
14. 's

b)

1. 2, 4, 7, 12 14
2. 1, 3, 13
3. 5, 6, 11
4. 8, 9, 10

c)

My teacher's called Pilar. She's a language teacher - she teaches Spanish. Pilar's classes are always very interesting. She works very hard to make her students speak to each other. We do lots of fun activities like quizzes and working in pairs. Pilar's really interested in us and because of this we are interested in her. Our teacher's got an award for her work: best Spanish teacher of the year!

I know Mark from playing games online. He loves games and he plays all the time - he's a really good player. He's very quick. Mark's family is quite small - he's got one sister and she also plays online games all the time. Sometimes I think they see each other online more than at home!