Which word is used in a strange way in these 6 sentences, and why?

[kasakuri]

See above.

Thank you emsr2d2! Your explanation for #3 was especially helpful.

Tdol, to me, 5 seems formal because of the "please," do you think otherwise?

Also, I can't come up with a better word for 2 than "tell." What did you have in mind?

Thanks as always for your help,