Well, what does the Gregg Reference Manual say about it (section 1080 a-c, p. 347)?
Short questions and statements frequently end with prepositions.
- What is this made of?
- Where did he come from?
- You have nothing to worry about.
What about you? Do you have any interesting grammar rules that you have to jump around in your writing? Or any special secrets that make navigating the English language easier?