Complete the following sentences using the information from 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!
   as they're at learning sign language      Gibbons can become ill or weak      if we stop keeping them as pets      If you have any questions during the tour   
1. , don't hesitate to ask.
2. Apes are as good at using tools .
3. We can help gibbons .
4. unless they're fed the right type of food.