单项选择题A.Regular noun plural formsB.Irregular noun plural formsC.Verb tensesD.None of the above items
单项选择题Which of the following is NOT true of the Hundred Years War
单项选择题John Keats was a(n) ______.
单项选择题______ refers to a sociolinguistic situation two varieties of a language exist side by side throughout the community, with each having a definite role to play.
单项选择题James Fenimore Cooper was most famous for ______.