Suspicious ! 

 Image 1  Alright, Minerva!  Do your job and punish these lovely students of your. Mental grin to Minerva!

Image 2: "No way!! Damn Gryffindors!! She's lying for sure"

Image 3 : "Argh!  Oh well... It doesn't matter. I'll get Potter some other places anyway!"
"Now for our little stuttering problem... Quirrell... (Killing stare!)

Image 4: "You don't fool me with your innocent looks, Quirell.
Remember: I'll be on the watch for you! Day and night!"
Play the foolish little professor while you can, Quirell!"