- Air_______ is one of the biggest problems in the world today
- Yes. We must take action to make the air less_______.
A.pollution; pollution | B.pollute; pollution |
C.pollution; pollute | D.pollution; polluted |
- Air_______ is one of the biggest problems in the world today
- Yes. We must take action to make the air less_______.
A.pollution; pollution | B.pollute; pollution |
C.pollution; pollute | D.pollution; polluted |