Have you ever wanted to do something (22) ______ ? Five years ago Bill Slade read about an organization calls Earthwatch. Earthwatch finds (23) ______ for expeditions to study and explore different parts of the world. 
Bill decided (24) _____ an expedition to study elephants in Africa. And he counted birds in the rain forests of South America. He planted (25) _____ in Europe and he studied whales in the Pacific Ocean. 
Bill said, ‘It was (26)______work, but we had a lot of fun, and I learned a lot, too. ’

(24)............

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