The United States is a country rich

21- Walk, cycle or use public transport if possible, to cut down on car
exhaust fumes sales buying fuel)
22- To keep the water clean we should not throw
23- Polluted water can directly do
-
24- The United States is a country rich in natural
25- We can only our environment by preventing pollution. (protect, damage, concern, collect))
throwing trash( for -from- by - with)
26- Put garbage bins around the schoolyard to prevent lazy students
27- It's time we did something to
28- To make the
29- The ocean is polluted because
30- A lot of countries are guilty
21
T1
S
onto the water. (trash-tray - fish - ship)
to people's health and kill fish. (injury - damage - harm - trouble)
(land mines - forests- resources)
1
the air pollution. ( disappear, reduce, increase ,persuade)
drinkable is extremely expensive. (foam, rock, iceberg, sewage)
raw is pumped directly into the sea. (sewage - material - fume - dump)
pumping raw sewage directly into the sea. (at, of, in, for)