In one of the questions, Cabrán is the very first word of the sentence, and there is no other part of the sentence (like a mid-stream capitalization. I was marked only partially right for capitalizing it and it "corrected" me to lower-case.
Cabrán todo mis libros en esa caja?
Isn't that correct? The quiz said it was supposed to be
cabràn todo mis libros en esa caja?