adjective or adverb?

Click on all adjectives.

1. The children behave well, but they are .
2. She didn't have a voice, but she spoke very clearly.
3. She couldn't answer the questions correctly.
4. This house belongs to my grandparents.
6. She is very at maths, but at languages.
7. She listened attentively when the scientist explained how a bomb can be made.
8. Either your watch is or mine is .
9. Liz even knows how to answer the most questions.
10. They walked happily across the fields.