exercise 6: Change the following singular nouns into plural nouns.1.The.......in Viet Nam wear traditional clothing called Ao Dai.(woman).2.The ethnic........in Viet Nam have unique cultures and traditions.(minority).3.The.........in the H'mong tribe learn to play traditional musical instruments.(boy).4.The.........used by the Dao people are handmade and very sharp.(knife).5.The women in the Tay ethnic group are skilled........(weaver).6.The..........of bread sold in the markets of Viet Nam are often made with rice flour.(loaf).7.The..........are considered a delicacy in some parts of Viet Nam.(mouse).8.The...........in Viet Nam are mostly imported from other countries.(salmon).9.The..........in the cities of Viet Nam are often overcrowded.(bus).10.The...........in Viet Nam produce many films and TV shows.(studio).11.The..........of the Muong people are often calloused from walking barefoot.(foot).12.The trophies won by athletes in Viet Nam are celebrated with...........and ceremonies.(parade).13.The..........grown in the highlands of Viet Nam are known for their sweetness.(tomato).14.The cats in Viet Nam are often kept as............and for pest control.(pet).15.The..........are not native to Viet Nam,but can be found in some rural areas for their wool.(sheep).