How can we care for our environment

We should not .................... the air. (clean / pollute)

We should ...................... the environment. (clean/ harm)

We should ....................... vegetable garden. (destroy/ create)

We should turn the lights .......... when not in use. (on/off)

We should never ........................ paper. (use/ waste)

plastic bottles can be ...................( thrown/ recycled)

We should .................. a tree. (cut/ plant)

We should never ................ litter. (drop/ pick)

Trees give us ................... (oxygen/ garbage)

Use papers on .............. sides. (both/ one)