2.19 Choose the correct words. Then listen 4 again and check your answers. 1 Octopuses can remember people's names faces. 2 Octopuses can / can't change colour 3 Elephants can / can't understand human language. 4 Dogs can understand a lot of vocabulary / grammar

1. Octopuses can remember people's names faces. 2. Octopuses canchange colour. 3. Elephants can understand human language. 4. Dogs can understand a lot of vocabulary.