Use the word given in capitals to form a word that fits each space.

Some _ have started using up-to-date filters to prevent pollution. FACTORY

Many factories and plants pollute air by pouring _ emissions into the air. HARM

We must not ignore the problems of _ pollution. ENVIRONMENT

Paper and plastic are recycled at _ factories. RECYCLE

People use different kind of _ to make paper. CHEMISTRY

it was great at the circus

i  didn"t    like crocodiles

their machines work better than his machines. her holiday expenses are larger than my holiday expenses. the parking space in my region is more expensive than in his region.

1. i exercise regularly in summer but more to do in winter. 2. she usually walks slowly but now she is walking even   faster . 3. nina speaks loudly but mary speaks even   louder . 4. he runs fast, than other boys. 5. i don’t sleep enough, less   than 8 hours. 6. he behaves badly, than other boys. 7. i smile often, more than my sister. 8. peter lives far from school, but ann lives closer .

я думаю, что  4 и в 6 предложениях ничего изменять не надо. может я ошибаюсь.