Read the passage carefully, then fill in the following blanks. In this essay, the author tells his personal experience. In the eyes of his son, he is a ____1____ father who is___2___ in teaching grammar. Once, he was ___3__ by his student’s inability to describe properly her trip to Europe. However, the author thinks that it is unfair to let the students bear the __4___of the criticism for their knowledge __5___ in grammar and vocabulary. The first reason is that the students live in a ___6_____ environment, because wherever they look and listen, they would see or hear some wrong spellings or mispronunciations. The second reason is that the schools are not setting high standards of English ___7_____. To validate his viewpoint, the author goes on with a demo of a grammar lesson with his son, illustrating how an effective way of teaching could arouse children’s ___8____ in learning English grammar.