480.
Mr. White works as a journalist at present, but he in a high school for several years.
A．has worked B．worked C．had worked D．has been working
答案 B
481.
—Shall I call at your house at seven o’clock tomorrow evening?
—I ______ a walk in the park. So you won’t find me at home then.
A. shall be taking B. shall take C. will take D. am taking
答案 A
