A) Read about some environmental problems and possible ways out of them. • water pollution
• air pollution
• land pollution
• disruption
• global warming
— people shouldn't leave litter in the streets
— plants shouldn't dump chemical wastes into rivers / atmosphere / on land
— concentration of smoke in the air should - be controlled
— we should stop killing animals
— the number of cars should be reduced
b) Match problems with their solutions and write as in the example. Use 2nd Conditional. Example: If plants didn't dump chemical wastes into rivers there wouldn't be water pollution.
2. How long has she been feeling unwell?
3. I've never met such a nice person before.
4. I have been waiting for you since four o'clock.
5. She has never written a letter by hand since she bought a computer.
6. I wonder where you have been all this time.
7. I have been learning English for five years.
8. You never know how he is going to react.
9. She has tripped over the cat and nearly fell over.
10. Look! I have found a ten-pound note! - Where did you find it?
11. Margaret is taking driving lessons now.
12. In recent years terrorism has become a greater threat.
13. The rain came suddenly and it has soaked all the washing.
14. Ever since we met, you have never asked me what I prefer to do.
15. How long have you lived here?
16. I have been interested in sports since my childhood.
17. What have you been doing since you left Cambridge?