V. Write the correct form of the words in brackets. 1. Marine heat waves __ many coral reefs and the unique ecosystem they support. (threat) 2. This exhibition on natural wonders of Asia is held __ . (annual) 3. Everyone agreed that it would be too __ to cross the Sahara Desert in the summer. (risk) 4. During this Nile River cruise, we can sail through ancient sites and __ villages. (charm) 5. She has great __ for him and his work as an environmentalist. (admire) 6. The snow-capped summit, 2,642 meters high, offers __ views. (amaze) 7. The group of hikers include some famous __ and zoologists. (explore) 8. By promoting __ tourism, Japan hopes that Mount Fuji will remain a natural wonder for future generations. (sustain) 9. Oxford attracts large numbers of __ . (sightsee) 10. A mountain in the Rockies became the __ for a film about Everest. (locate)

Here are the correct forms of the words in brackets:<br /><br />1. Marine heat waves **threaten** many coral reefs and the unique ecosystem they support. <br />2. This exhibition on natural wonders of Asia is held **annually**.<br />3. Everyone agreed that it would be too **risky** to cross the Sahara Desert in the summer.<br />4. During this Nile River cruise, we can sail through ancient sites and **charming** villages.<br />5. She has great **admiration** for him and his work as an environmentalist.<br />6. The snow-capped summit, 2,642 meters high, offers **amazing** views.<br />7. The group of hikers include some famous **explorers** and zoologists.<br />8. By promoting **sustainable** tourism, Japan hopes that Mount Fuji will remain a natural wonder for future generations.<br />9. Oxford attracts large numbers of **sightseers**.<br />10. A mountain in the Rockies became the **location** for a film about Everest. <br />