---Kate, I met two aliens in my garden last night. ---
A. That’s OK.
B. How do you know that?
C. You are kidding!
D. Did you see them?
网友回答
A. That’s OK.
B. How do you know that?
(答案→)C. You are kidding!
D. Did you see them?
解析：That’s OK.那好吧； How do you know that?你是怎么知道那个的？You are kidding!你是在开玩笑吧！Did you see them?你看见他们了吗？根据上文，凯特，昨晚我在花园里面遇到两个外星人。可知选C最符合语境。