Hello and goodbye

1. Which of these is a way to say good-bye?

2. 'Have a lovely and relaxing _____. See you on Monday.'

3. Which of these is an formal greeting?

4. 'Hi Sammy, how are you _____?'

5. 'I'm not so _____ today... I feel tired.'

6. 'Hi Sally, how are you? And _____?'