Fill in each of the blanks with an appropriate word from the following words. Change the form if necessary.controversialendureinfluencereasonablereinpoliticalprimaryneedswordsbehaviorWhether teachers can "talk politics" in class is a (1) _______ issue. Recently Soochow University proposed to (2) _______ in the appearance of university instructors on TV (3) _______ shows. Some people support (4) _______ involvement of professor in those political programs, but others think the teacher's (5) _______ responsibility is to meet student (6) _______. Young people will be (7) _______ by many people, including teachers. But it is their (8) _______, not their (9) _______, that will have an (10) _______ impact on the students.