IV)
1, C. By
2, B. Ìf
3, A. Since
4, D. Beautiful
5, D. Had lived
V)
1, Likes
2, Had/ is
3, Doesn't know/ could play
4, Has visited/ started
5, Is doing/ is studying/ has been studying
VI)
1, e she could pass the entrance exammination
2, c she hasn't phoned me
3, b when he was young
4, a so she had a day off
5, d while they were watching Peter playing football
VII)
1, In Amazon region of South America, central America. Africa and Southeast Asia.
2, They are very important.
3, They produce about 30 to 40 percent.
4, It will make the climate uncomfortable and even dangerous to life.
5, Yes
