1.）Someone who is _______ can make people around him laugh.
2.）John is a superman. He works 12 hours a day. He is so ______.
3.）To be friends with someone who is ______, you will be wise too.
4.）A ______ atmosphere is important to a successful class.
5.）When speaking in public, most people will be _____. That's something biologically
determined.
