Answer:
I turn everything around, but I cannot move. When you see me, you see you! What am I?
I pass before the sun but make no shadow. What am I?
I mean goodbye for South Americans.
What jumps when it walks, but sits when it stands?
I have a head, tail, but no arms and legs. What am I?
If all Wibbles are Criggles, all Borkins are Kwumblins, no Hoggles are Borkins, and all Criggles are Borkins, is it true that all Borkins are Criggles?