Here's the answer:
“wie viel Milch ist im Kühlschrank?”
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning German with Memrise get this phrase correct 97.42% of the time!
Fun fact: the hundreds of thousands of people learning German with Memrise get this phrase correct 97.42% of the time!
