Let's ........... with this problem
start
starting
starts
started
The plants keep the buildings warm .......... winter
at
off
on
in
Today , I'm going to talk ............. Air pollution
of
for
about
We should ............. solutions to these problems
find
finding
finds
found
The plants produce ...............
carbon dioxide
fossil
air
oxygen
The plants also provide home ............ bees
The plants .............. carbon dioxide
absorb
eat
drink
sleep
When you give a presentation , make .......... contact with the class
eye
hand
mouth
ear
The ........... make air pollution worse
fossil fuels
trees
rain
clouds
Air pollution is one of the .............. problems for people's health
small
biggest
bigger
big
Are there .............. questions
little
any
few
some
Thank you very .............
such
much
match
many
Air pollution is created ............ traffic
by
Don't move around alot , keep your .......... in the same place
legs
feets
eyes
hands
The plant help to ............ the air
clean
cleans
cleaned
cleaning