—May I open the window to let in some fresh air?—A. Come on!B. Take care!C. Hold on!D. Go

问题补充：

—May I open the window to let in some fresh air?

—

A. Come on!

B. Take care!

C. Hold on!

D. Go ahead!

答案：

A. Come on!

B. Take care!

C. Hold on!

(答案→)D. Go ahead!

解析：考查交际用语。句意：——你介意我开窗，让新鲜空气进来吗？——好啊！come on加油，用来鼓励对方；take care当心；go ahead干吧，用来表示赞同别人的做法；hold on别挂断，先拿着。