单项选择题
A. when did you get back B. What a surprise I got C. How I admire you D. I am Tom E. got hold of F. got through G. this is Tom H. tried to contact you
A．To warn people of emergencies via messages. B．To popularize the use of cell phones. C．To estimate the monthly number of messages. D．To promote the wireless industry.
A．help B．satisfy C．demand D．take