I. Use the Present Perfect Continuous. 1. They (not look) for him since Saturday. 2. George (collect) stamps since he left school. 3. You (ring) her up all morning? 4. I (study) English for 5 years. 5. They (not build) a house for 3 years. 6. Mr. Green (repair) his car for 2 days. 7. How long she (live) here? 8. She (not sing) a song all day. 9. How long you (read) this book? 10. How long you (play) basketball? II. Choose the correct verb form. 1. How long in the street? a) has it been raining b) have it been raining c) has it raining 2. He in the kitchen. a) have been cooking b) have cooking c) has been cooking 3. They TV since morning. a) have been watching b) has been watching c) have watching 4. My sister for 2 hours. a) have been crying b) has been crying c) has crying 5. How long in Paris? a) has she been living b) does she live c) did she live 6. Tom as a postman for a month. a) worked b) has been working c) has working 7. He is tired because he around

1)Глобальные экологические проблемы актуальны для России. Следует признать, что страна является одной из самых загрязненных в мире. 
2)то сказывается на качестве жизни и пагубно влияет на здоровье людей. Возникновение экологических проблем в России, как и в других странах, связано с интенсивным влиянием человека на природу, которое приобрело опасный и агрессивный характер.
3) Стараются уменьшить количество свалок.
4) На мое мнение их уже ни чем не убедить.

1) global environmental problems relevant to Russia. It should be recognized that the country is one of the most polluted in the world. 2) that affects the quality of life and adverse affects on human health. The emergence of environmental problems in Russia, as in other countries, associated with intense human influence on nature, which has become dangerous and aggressive nature.3) try to reduce the amount of landfill sites.4) On my opinion are nothing more than not to convince.

1. Yes, I am particularly interested in painting.
2. Yes, they are.  Painting is more exciting for me.
3. I know many famous artists : Goya, Rafael, da Vinci.  I like them very much 
4.  My favourite painter is Levitan because he painted wonderful landscapes.
5.  I like landscape painting more.  Well-known portraitists are Goya, Rubens,  Repin, Perov.  Well-known landscapists are Levitan, Savrasov, Shishkin. 
6.  Yes, he painted very beautiful seascapes.  My favourite is his world-famous painting "The ninth wave."  
Вот так как-то надеюсь правильно)))