Listen to a talk and choose the correct word to complete each sentence.
1. Polluted water is unsafe for drinking / cooking and for other uses.
2. Sometimes toxic substances flow into rivers from factories / hospitals.
3. Water pollution has a dangerous / harmful effect on our life.
4. We couldn't / shouldn't throw litter into rivers and lakes.
1. Polluted water is unsafe for drinking / cooking and for other uses.
2. Sometimes toxic substances flow into rivers from factories / hospitals.
3. Water pollution has a dangerous / harmful effect on our life.
4. We couldn't / shouldn't throw litter into rivers and lakes.
1. drinking
2. factories
3. harmful
4. shouldn’t