bài 1:,
1.dumping poison
2.air pollution
3.water temperature
4. Earth's surface
5.substance
6.surprised
7. Light pollution
8.waste
9.acid
10.poisonous
Ex2
1.A.one
2.C. almost
3.D.plays
4.B .provide
5.A. banks
6.A.behind
7.B.irrigate
8.D. however
9C.in
10.A.keep
chúc bn hok tốt. Cho mk ctlhn cho nhóm mk nha<333