POLLUTIONIII. 1. C 2. E 3. A 4. B 5. D A. PHONETICS

28. - DAP AN BAI TAP THI DIEM 8 CUA TAC GIA LUU HOANG TRI
DAP AN BAI TAP THI DIEM 8 CUA TAC GIA LUU HOANG TRI

28. Light pollution makes us unable to see the stars in the sky.