Nelle domande gli aggettivi e i pronomi interrogativi aventi funzione di soggetto non vogliono l’ausiliare do/does; nelle domande interrogative negative sì.
What
What do you do? What about you? What’s your name/job? What size suits you?
Where
When
Why
Who / Whom
Who doesn’t speak …? Who never does …?
How / How old / How much / How many / How far / How tall
How about a drink?
Which
Whose (Di chi / cui)