"Biscuit" should always be an acceptable alternative to "cookie" for us non-Americans.
Guys!!!! I just wrote '' It might be a chocolate biscuit'' and it didn't accept it!! Come on :-)!
I'd better eat it to find out.....Hmm, I'm still not sure. I'd better eat another one...
Not accepting it's for it is?? Really? This is supposed to be an everyday language skills