you ................ plant trees.
should
you ............. throw rubbish around
shouldn't
you ............. recycle plastic.
should
we ................. use solar energy
should
we ........................ stop air pollution
should
we ............ turn off the tv when you don't watch it.
should
people ................... cut down trees
shouldn't
we ................. waste water
should
people ............... recycle plastic, glass and metal
should
we ..................... reduce land pollution
should
we .............. destroy forests.
shouldn't
don't ........... water.
waste
............... the TV
unplug
.......... public transportation
use
don't .................. forests
destroy
plant ..............
trees
