What's wrong with "Hun putter hunden i kassen."?
Nothing, report it.
We would rarely say it with out a helping adverb like "ned" or "ind" or whatever adds the correct direction.
why not sætter?
Why not sætter? I don't see the difference
Why can't I write sætter or stiller here?
Ned = hvornår boxen er på jorden?
Is "placerer" okay?