You ___________ hunt animals for their skins and furs.

Factories__________ use filters.

We __________ reduce the air pollution.

(should/ prevent/ we/ energy/ use/ warming/ to / global/ less)

Aşağıdakilerden hangisi ya da hangileri doğrudur?

I. You should not use energy from wind and the sun.

II. You should keep the rivers clean.

III. You should not  use low energy bulbs.

IV. You should save natural sources.