phần còn lạ đây ạ, giúp mik với, đg gấp ----- Nội dung ảnh ----- Highlands. Many researchers (3) _____ classified Gongs as ceremonial musical instrument. The Gongs are made of a (4) mixt ___ of brass and gold, silver, bronze. In most of ethnic groups, only males are allowed to play Gongs. However, in others such (5) ___ Ma and M’Nong groups, both males and females can play gongs. Few ethnic groups, Gongs are performed by woman only.