Duo does not like the word response...guess how I know that??? Although in English answer and response have the same meaning, DUO disagrees. Also do you know that donna ONLY means woman??? NEVER lady. Consequently, as English speakers we must put aside our vast English knowledge and go with DUO's narrow view if we wish to learn Italian through this FREE site.
I know Italian (this is a much needed review for me) and that does assist me in determining answers. OTOH, I am not tempted to learn new languages here because of this flaw. This is a fairly new site, and I am sure, that through the years there will be a great deal of improvement.