1. Hard work is the key success. 2. He taught his children to be respectful 3. She's very loyal her friends. 4. We care each other here, like a family. 5. He's a great fan country…

Here are the completed sentences:

1. Hard work is the key to success.
2. He taught his children to be respectful of others.
3. She's very loyal to her friends.
4. We care for each other here, like a family.
5. He's a great fan of country music.
6. of other cultures. (It seems like there's a missing part for this sentence. It could be: "He is interested in learning about other cultures.")

Feel free to ask more questions or for further clarifications!