单项选择题What is the librarian’s first suggestion
单项选择题Which descrption is NOT correct about Benjamin Franklin
单项选择题One of the characteristics that have made Mark Twain a major literary figure in the 19th century America is his use of ______.
单项选择题linguists give priority to the spoken language not the written language because ______.
单项选择题A linguist regards the changes in language and language use as ______.