WALKING TO SCHOOL WILL HELP ……… AIR POLLUTION.A. REDUCE B. REUSE C...

16. - KIEM TRA HOC KY 2 LOP 6 THI DIEM
KIEM TRA HOC KY 2 LOP 6 THI DIEM

16. Walking to school will help ……… air pollution.

A. reduce

B. reuse

C. recycle

D. refill