A. BEGIN B. ARRIVE. C. ANNOUNCE D. TRAVEL---THE ENDPHIẾU TRẢ LỜI TRẮ...

29. - 3 DE KIEM TRA HOC KY II MON ANH LOP 10 VA DAP AN
Lớp 10 Tiếng Anh 3 DE KIEM TRA HOC KY II MON ANH LOP 10 VA DAP AN
29. What will happen if the air……….? A. was polluted B. be polluted C. is polluted D. has polluted