THE GAS FROM THE CHEMICAL FACTORY HAS CAUSED SERIOUS ... ( POLLUTE...

7. - BO DE THI TUYEN SINH VAO LOP 10 CHUYEN LAM SON THANH HOA
Lớp 10 Tiếng Anh BO DE THI TUYEN SINH VAO LOP 10 CHUYEN LAM SON THANH HOA

7. The gas from the chemical factory has caused serious ... ( pollute )