Complete the sentences with: am, is, are, am not, is not, are not, was, were, was not.

1. Today, I ___ (+) happy, but yesterday, I ___ (+) sad.
2. He ___ (+) friendly, but last year, he ___ (+) shy.
3. We ___ (+) hardworking, we ___ (-) lazy.
4. They ___ (-) mean, they ___ (+) kind.
5. You ___ (-) bored, you ___ (+) funny.