Feel blue

 Meaning:

• When you feel blue, you feel sad.

Example sentence:

There's no particular reason to feel blue. He'll come back soon and everything will be OK again.



Questions for you to answer:

1. When did you last feel blue?
2. When do you usually feel blue?
3. What do you do when somebody feels blue?
4. How does be on cloud nine relate to 'feel blue'?