——May I open the window to let some fresh air in? ——
A. Hold on
B. Go ahead
C. Come on
D. Take care
网友回答
A. Hold on
(答案→)B. Go ahead
C. Come on
D. Take care
解析：考查交际用语：A. Hold on别挂断B. Go ahead 请便C. Come on加油 D. Take care保重，句意：--我可以打开窗户让新鲜空气进来吗？--请便。选B。