they have to
Die müssen reich gewesen sein.
They must have been rich.
They have to go there immediately.
Die müssen doch hier irgendwo sein.
They must be around here somewhere.
— Chihiros Reise ins Zauberland (2001)
Die müssen immer alles genau haben.
They always need everything to be precise.
— Die Blechtrommel (1979)
Die müssen mich für Superman gehalten haben.
They must have thought I was Superman.
— Picknick (1955)