I. Vocabulary
1. New words:

Polluted /pəˈluːt/

Clean /kliːn/

Dangerous /ˈdeɪn.dʒər.əs/

Safe /seɪf/

Beautiful /ˈbjuː.tɪ.fəl/

Ugly /ˈʌɡ.li/
2. Review:

swim /swɪm/

Sail /seɪl/

Dive /daɪv/

surf /sɜːf/

Kayak /ˈkaɪ.æk/

Windsurf /ˈwɪndˌsɜː.fɪŋ/

Snorkel /ˈsnɔː.kəl/

Water ski /ˈwɔː.tərskiː/
II. Reading
III. Structure