What should we eat?
뭐 먹을까요?
What are you doing?
뭐 하세요?
I’m hungry
배고파요
Keep up the hard work
수고하세요
Thank you for you hard working
수고하셨습니다
Hello
안녕하세요
Bye (you’re leaving)
안녕히 계세요
Thank you for the meal (say this to someone who prepared the food or treated you with the food before you start eating)
잘 먹겠습니다
Thank you for the meal (when you finish eating as well to someone who prepared the food or treated you with the food)
잘 먹었습니다