who's

Yep, the song the Whos sing in How the Grinch Stole Christmas.

Pon my word, said Flick aggressively, whos disposing of things around here?

The main thing is settlin down to something thats your own; findin the fellow whos worth helping on, and startin to save.

A man whos got a code of morals is moral, whether hes a libertine, a horse thief or—a minister.

Tentelyev, whos an awfully pushing fellow, began asking the host to present him; but directly she heard his name.

You know her, Grigory Mihalitch; she told me she had met you at some Russians, whos a wonderfully intellectual person too.