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

21. If they have to go to hospital, their family members will take care of them.

V. 1. If a person looks at the sky at night, he won’t be able to see the Milky Way by naked eye.

V. 22. results → results in

23. make → cause

24. because → because of