Who vs. Whom
Here’s a simple trick to help you remember when to use who and when to use whom.
If the answer to your question could be “him,” use whom. Remember that both end with the letter M. Otherwise, use who.
Question: Who put the book in the library?
Answer: He did.
Question: To whom should I address this letter?
Answer: Address it to him.
Question: Who called me?
Answer: He did.
Question: To whom does this phone belong?
Answer: It belongs to him.
Stop Worrying About Grammar Rules
You could forget rules like this and hire a copywriter to handle it all for you. I happen to know someone…