Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage. Why are American films so popular
A.Because they are performed by famous actors and actresses. B.Because the good guys in the movies always win in the end. C.Because the heroes have to deal with many problems and frustrations. D.Because the movies are well made and the stories are very good.