... MORE EXERCISES FOR ENGLISH 9 ( Unit 6 : THE ENVIRONMENT ) TASK 1:Odd sound out: A B C D 1. laughed missed wasted dropped 2. environment ... countries, both developed and developing, are guilty of doing this. Secondly, ships drop about 6 million tons of garbage into the sea each year. Thirdly, there are oil spills from ships. A ship ... are very (5)__ to humans. Worse still, these gases, after a series of chemical changes, turn ( 6) ___ toxic acids. They fall down in “ acid rains” , raising the acidity in the air, soil and water...