.
—May I see your ticket, please? I think you in my seat.
—Oh, you’re right. My seat is upstairs. I’m terribly sorry.
A. are sitting
B. sit
C. sat
D. have sat
网友回答
(答案→)A. are sitting
B. sit
C. sat
D. have sat
解析：考查时态。句意：我可以看一下你的票吗？我认为你坐了我的座位。结合语境可知后一句描述的是现在正在进行的动作，故用现在进行时态，选D。