单项选择题
A. In Vermont. B. In Washington. C. At National Theater. D. In California.
A. He has always lived in America. B. He has been in America for three years. C. He visited America three years ago. D. He has come to America to do research on advertising.
A. how to adapt to the environment B. how to defeat something dangerous C. how to forecast weather D. how to control moving objects