A．five-year; U.K.B．four-year; U. K.C．three-year; U. S.D……

单项选择题The study of the rules whereby words or other elements of sentence structure are combined to form grammatical sentences is ______.

单项选择题Which of the following is NOT an approach for English language to enrich its vocabulary in the past several centuries

单项选择题Words like Xerox and Kodak are formed by ______.

单项选择题This passage is most probably authored by ______.

单项选择题According to the passage, consumer confidence is most affected by ______.