The young lady is not usually an example of good things in the Luann comic, but she illustrates a good point here.
You have permission to end a sentence with a “preposition”!
Actually it’s an adverb, or part of a separable verb, if you prefer. Use the search box on the upper right corner to see more posts on this subject.
Okay, so here’s the comic.
Maybe that last panel is a good illustration of why you can do this.