| Topic: | environmental problems | |
| Test 1 Listening Section 4 | Cambridge IELTS 4 | |
| Test 4 Listening Section 4 | Cambridge IELTS 3 (with answers) | |
| Test 1 Reading Passage 3 | Cambridge IELTS 5 | |
| Reading and speaking Our Plastic Planet | New Headway Upper-intermediate Student's Book | |
| 85 Pollution and the environment | English Vocabulary in Use: Pre-intermediate & intermediate | |
| pollution, fumes, waste and rubbish | Key Words for Fluency: learning and practising the most useful words of English | |