"The big cake is in which place?"
Translation:큰 케이크가 어느 곳에 있어요?
so frustrating that I managed to write this sentence perfectly but used 있습니까 instead of 있어요 and duo marked it wrong :(
Flag it! It shouldn't be wrong! (Though fyi, this skill is focused on using 해요체 form so in general try using that where possible)