Task 11) Global warming means that -e) the weather is becoming hotter and drier.2) Heavy traffic and exhaust fumes - a) pollute the air in most cities.3) The emissions produced by factories - f) are dangerous to birds and other wildlife.4) The pesticides used on crops in the countryside - d) create acid rain which destroys crops.5) Heavy rain and rising water levels in rivers - c) have caused serious flooding.6) Most households produce large amounts of waste - b) which is taken to landfill sites.7) The ozone layer - h) protects living things from the harmful radiation of the sun.8) Large amounts of radiation - i) can cause illness and death.9) If you recycle things that have already been used - g) you process them so that they can be used again.10) I prefer organic food because - j) it is produced without artificial chemicals or pesticides.Task 21) Dennis gave up smoking two years ago. He used to smoke 40 cigarettes a day.2) Liz used to drive a motorbike, but last year she sold it and bought a car.3) We came to live in Manchester a few years ago. We used to live in Nottingham.4) I rarely eat ice cream now but I used to eat it when I was a child.Task 31) I used to work in a bank but I left and got a job as a gardener.2) Since we had the baby I was used to not getting enough sleep.3) How’s the new job? Haven't you got used to it yet?4) You didn't use to smoke! When did you start?5) The noise was deafening but the driver was used it.