If we take care of the world we will be happy.
a) If we ____ /look after/the world- the world/ be/ beautiful.
B) if we ___/ plant/ trees every year the air ___/ be fresh/
C) if we ___ / protect/ seas from pollution any sea ___ never/ die/
D) if we always___/ protect/ the environment on land in many ways then we ___/ protect wild life and their habitats.