Here's the answer:
“다이아몬드가 담겨 있던 그 상자 ~”
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 97.6% of the time!
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 97.6% of the time!
