Find the clause where ‘who/whom’ will go, and concentrate on only that part of the sentence. Plug in either ‘he’ or ‘him’, to see which sounds correct (you may have to rearrange the words to put them in the proper order). If ‘he’ sounds right, you go with ‘who’. If ‘him’ sounds right, go with ‘whom’.

Examples:

May I ask ___ is calling?

(He is calling. So, it would be ‘May I ask who is calling?’)

I wasn’t pleased with the person ___ she chose to deliver lunch.

(She chose him. So, the correct choice is, ‘I wasn’t pleased with the person whom she chose to deliver lunch.’)

The question mark in that situation stays outside of the quotation marks, because you are calling attention to the words and not quoting something or writing dialogue.

You use ‘who’ there because you’re talking about people. A person is a who. An object is a what.

The last sentence is incorrect because a ‘hometown crowd’ is being referred to as a single thing. If the sentence were made plural, ‘they’ would have been correct.

You use who when talking about the subject of the sentence, and whom when talking about the object. For example: “Who is coming to the movies?” Who is the subject of the sentence. “You are going to the movies with whom?” You is the subject, not whom.

Your question mark always goes in the quotes, unless you are quoting an entire sentence within a question, like this, “Why did that person say, ‘We are going to the movies today,’?”

In the last sentence you said, the crowd is the subject, and although there is more than one person in a crowd, the word crowd is singular, so you have to use “it.”

ACTUALLY. If you wish to be correct approximately your English. It’s neither ARE or IS. If you wish to be strict approximately your English, within the “prescriptivist” correct means, the reply is BE or WERE. You see, it is what we name subjunctive. It’s virtually useless in English, however the verb TO BE nonetheless makes use of it for individuals who select to make use of it. An instance perhaps: If I had been president, I could….. NOT If I used to be president, I could…. Now the beyond annoying is mostly used to exhibit it, however you could use BE itself as a subjunctive marker. No, Subjunctive does not difference relying on Number. It’s the entire equal. You can marry him in case your boyfriend be good-looking and wealthy. That could sound awkward, so that you must as a substitute use WERE. You can marry him in case your boyfriend had been good-looking and wealthy. The thing more is, it’s kind of awkward. Unless the pronoun does not consult with the boyfriend. I could say both: If your boyfriend had been good-looking and wealthy, you’ll be able to marry him. OR You can marry your boyfriend if he had been (or be) good-looking and wealthy. There are a couple of instances that want the subjunctive. I can not cross over all of them now, however you’ll be able to continually come and inquire from me. However, mostly IF clauses want the subjunctive or conditional (would, could, must,).