6.His works were not a________ until after his death.
3.These books will be p________ helpful to those who wish to improve their English.
8.C_______ with foreign countries can bring us much information about the world.
13.No matter how frequently performed,the works of Beethoven always ______ large audiences.(attractive)
16.Disney is c_______ by many as the best mass service provider in America and across the world．
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