Answer:
What kinds of men are always above board?
What is the only letter in the alphabet that does not appear anywhere on the periodic table of elements?
At first I am a yellow weed in the lawn, and then the wind blows, and my white feathers are gone. What am I?
What's a place you have left but didn't enter?
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?