Choose the right word.

1. After his divorce, Alan became ... and moody.
2. The ... stage of any project is always the hardest.
3. Sam was ... when he found out that his car was scratched by the children.
4. To deal with the problem you have to understand its ... causes.
5. Laura was bright, ... and cheerful.
6. Sara didn't smile and looked ... .
7. He ... was of her innocence.