I am Spanish native speaker and the sounds of these new letters in Greek sound quite similar to the sounds of my language. I think the confusion is mostly because of what kind of sounds are we use to hear in our everyday life
If you listen to the whole sentence, it is "r", but if you listen to the single word, it is "d".
In a comment on another thread it was stated that έχει = he is, but here the drop down box says έχει = he has. Does έχει mean either "he is" or "he has" depending on context?