Test yourself on “sonst”

What’s the core idea of sonst?

What’s the proper translation for what else?

What’s the difference between “Was sonst” and “Was sonst noch”?

What’s the common way people in German stores ask you if you need anything else?

You want to blackmail your partner into making you coffee by threatening to cry. How would you phrase that in German?

Day 37 of quarantine.
With one beer left in the fridge and the and the corner store closed, things get heated.
Your partner tries to intimidate you and tells you not to touch the beer, but you’re not scared.
What’s the proper way to say “Or what?” in German?
(this wasn’t explicitely mentioned in the article, but you might be able to deduce it :)

Upon seeing that the dishes are done, your partner asks you if it was you.
You think it’s a weird question, because you’re the only person living there. What’s a proper response in German:

Your friend, who had had a bad argument with their lover, tells you that calling them was “umsonst”.
What does it mean?

What’s an alternative for umsonst that only means for free?