Test 15 (Unit 15) DATE: MARK: 100 (Time: 20 minutes 3 We keep animals in zoos 4 Factories use special filters 5 We pollute our cities (Marks: 5x4 20)

Test 15 (Unit 15)

DATE: ..........................

MARK: $$\frac{}{100}$$ (Time: 20 minutes

1. We .......................... keep animals in zoos


2. Factories .......................... use special filters


3. We .......................... pollute our cities

(Marks: $$\frac{20}{5 \times 4}$$)