Complete the sentences using the words in 1.

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
   captivity      conserve      extinct      rare      survive   
1. Wild animals need to live in their natural habitats in order to .
2. Many animals are in urgent need of protection.
3. Scientists estimate that every day around 150 species become .
4. All the animals looked well after being released from .
5. A new law has been introduced to wildlife in the area.