Give the correct form of the words given to complete the sentences

We will save ________________ if we turn off fans and lights when we don’t use them.(electrical)

5. The green ________ bags are good for our environment.(shop)

6. If you burn rubbish, you will produce ________________ smoke. (harmfully)

7. The air will be ________________ if more people cycle. (pollution)

8. At uniform fairs, students can exchange their ____________ uniform. (use)

9. We should use ________________ pens and pencils. (refill)

10. My mom always use ________________ shopping bags.(usable)