choose the correct words to complete the sentences : 1.Water pollution has.....the river.Nobody swims there (contamination/contaminate/contaminated) 2.Don't use.........chemicals.They are harmful to our health (to poison/poison/poisonous) 3. Water pollution causes the..........of a lot of fish (die/death/dead) 4. Water pollution causes a lot of fish to .........................(die/death/dead) 5.The acid has causes great...........to the environment (to damage/damaged/damage) 6. The polluted air....our health badly (to damage/damages/damage) 7.The serious..........has left the river with very few fish (contamination/contaminate/contaminated) DỊCH GIÙM MK NHA