Translation:You are busy every day.
DuoLingo told me "You have a space in your answer" and said that the correct answer was "You are very busy everyday." This is actually not proper English, if you want to get pedantic or technical. "everyday" is an adjective like "An everyday tea" or "Your everyday routine"...or it can (uncommonly) be a noun referring to your daily routine. If you want to refer to something happening on all days, it is only correct to say "every day" as two words, with a space.
This may seem like a quibble but I think some people using this may get their English confused here...and especially since many people taking courses using English as their "base" language aren't native speakers, it's important for the DuoLingo team to be mindful of these things and fix these errors.
Unfortunately, there's no way for me to report this. The Report button for me only has a multiple choice, and there was no option for me to report a problem with the English sentence in this...why, I have no clue, but I certainly feel unhappy about it. I am really trying to help here and it is really frustrating to me that the architects of the DuoLingo site seem to have made it very hard for me to help or contribute in the ways I want to.
It only happens and is a problem with the native speakers of the likes of you.
And No, We, non English natives, however ,aren't picky and naggy about the English equivalents. It isn't a bigger problem for us, if that is what you think.
Anyway, Duolingo isn't a school, but a free, modest platform that can get you somewhere in the path of learning a language, so please stop nagging all of "ye" (not "you"; you just reminded me of your likes) stop getting irritated over those very minor and sub-issues which shouldn't be your focus,
And instead, focus on the wholistic meaning of the sentence in English, and conclude whether the English suggestions/corrections match what you thought of or not..
"The whole day" or "all day" is different from "every (single) day": https://chinese.yabla.com/chinese-english-pinyin-dictionary.php?define=all+day