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2. Using Expression Page 33


1. Mark took part (in) several expeditions to the summits of mountain in the Himalayan region

2. A scientist who tries to figure (out) a way (to) cure cancer is also a kind of explorer.

3. Many of the early female explorers didn't worry (about) hunger or fatigue.

4. Chris laughs (at) danger, she has no fear.

5. Jake participated (in) a 500-mile hike in Northern Australia last fall.

6. Arlene Blum has carried (out) many mountaineering expeditions.