Решение:
Заполним пропуски, исходя из контекста предложений:
- Tiger is an animal.
- I'm on the sofa.
- I'm on the floor.
- These trousers are too long for you. You can see.
- There is one swing in the garden. Children always swing in.
Ответ: 1. animal; 2. sofa; 3. floor; 4. see; 5. in.