Most of the sentences in this lesson have been pleasantly manageable. I applaud the course creators for that! Except for this sentence. Not so stoked about this one :(
This one could easily be broken into three exercises without losing anything except student frustration.
"stand there by" or "stand there at" would be better in English
What are you, some kind of kindergarten teacher?
No, the kindergarten child!
What the hell is that??? A contest or psychiatric experiment? You go to the window, and fly out to the airplanes? Have a good flight! I wonder with which chemicals.