Is it do your friends or does your friends?

Excuse me, but I'm a bit confused about the grammar in that sentence. Could you clarify whether it's "Is it do your friends" or "Does your friends"? As a language enthusiast and professional in the field of finance, I'm always keen to ensure clarity and precision in communication. Could you please elaborate on the correct phrasing and perhaps explain the context in which it would be used? I'm eager to learn and improve my own understanding.