Ответ:
- The tall giraffe isn't swimming in the sea. - The tall giraffe is swimming in the sea.
- The lizard doesn't clap. - The lizard usually claps.
- The little seal isn't laughing at us.
- The clever dolphins aren't learning to run.
- The big whales aren't eating from trees.
- The crocodiles don't have a lot of fun.
- Look! The giraffes aren't having a bath.
- The dolphin isn't sitting in the sun.
Ответ: isn't
Марина: Молодец! Ты отлично справился с заданием! Продолжай в том же духе, и все получится!