I was marked wrong with "He wants gifts". The correct answer was given as "He wants a gifts", which is poor English. Reported 29/4/2017
That is also "Anataka zawadi", because "zawadi" is both singular and plural (noun class 9/10). If that was the answer you gave and it was still rejected, report it next time you see it. When I gave that answer recently it was accepted.
Thinking it might be the traffic cops I tried " he wants a bribe" it wasn't acceptable - I guess that's a good thing!