I found some incorrect suggestions for the sentence:
"Tu precisas dos tuas queridas amigas."
It should suggest "das tuas".
Also, I will try to be less lazy and add more suggestions for 4.0. Also notice that I have been involved on LibreOffice's autocorrect, adding tons of words by hand and on the British dictionary, adding an average of ~400 words by month.
On Sunday I bought another grammar book.
Every year, during the school starting time, the supermarket where I work always sells a new grammar book, so I have been buying one just about every year.
But you are right, I am a lazy ass