why not 신발이에요?
It is still not fixed, July 2020
Wow, are you from the future?
I'm still in June 2020 xD
And same, a week later, it's still not accepted yet.
there is no context here (nor the lesson is about a particular polite form) can @duolingo give the grammatical explanation of why neither 구두는 신발이에요 nor 구두는 신발입니다 are accepted?
Isnt the word 신발 a swear word as well?
No, that's 씨발.
For the record, depending on who you talk to, this word (and swearwords in general) can be considered very offensive (much more than in some other cultures).
why is 구두는 신발이에요 not accepted? Duo should atleast mention the respect level? This in unfair.