Bài 11: Give...
1. (câu này hình như thiếu động từ thường, is held)
2. have visited
3. have organized
4. has become - attracts
5. has been
6. includes
7. takes place
8. is taking part in
9. is
10. parade
Bài 11: Complete...
1. Natural
2. harmful
3. contaminated
4. polluted
5. unable
6. environmental
/
1. contaminated
2. Industrial
3. death
4. Pollutant
5. pollution
6. difficulty