Quick question, does "Was Lust sie tun?" or "Habt sie Lust, was zu tun?" mean, "What do you want to do?"? I haven't been learning German for very long and the textbook didn't explain this very well.
The correct form would be:
"Haben Sie Lust etwas zu tun?" ("Do you want to do sth?")
"Was möchten Sie tun?" ("What do you want to do?")
But this is formal German. Normally when you speak to a friend you say "Du":
"Hast du Lust etwas zu tun?"("Do you want to do sth?")
"Was möchtest du tun?"("What do you want to do?")