4. Fill in the gaps with the correct reflexive pronoun (myself, yourself, etc.).

Solution:

• 1. Children, please behave yourselves! (Plural 'children' requires plural 'yourselves').
• 2. He hurt himself while he was skateboarding. ('He' requires 'himself').
• 3. I made this cake myself. ('I' requires 'myself').
• 4. The cat is looking at itself in the mirror. ('The cat', a singular non-human, requires 'itself').
• 5. We really enjoyed ourselves at the theme park. ('We' requires 'ourselves').

Final Answer: 1. yourselves, 2. himself, 3. myself, 4. itself, 5. ourselves