Meeting up? I hope I am correct. Sorry if I'm not.
Tipped his hat politely
because a complete predicate includes the verb and all the words that tell what the subject is or what it does.
Sentence one --
Verb - Heard
Main Verb - Heard; Action
Helping Verb - None
Sentence two --
Verb - Know
Main Verb - Know; Action
Helping Verb - None
Write about a good experience you've had recently and how that experience was special to you, include a message in it. Half a page to a page should do. After you're done looking over it, make that message in your story that you want to convey the theme and the reasons behind it. I can't write this for you since I don't know who you are, but you know who you are.