I had never expected you to turn ________ at the meeting. I thou

I had never expected you to turn ________ at the meeting. I thought you were in Shanghai.
A、around
B、on
C、in
D、up
【正确答案】：D
【题目解析】：turn around转身，（经济或生意）好转；turn on打开，发动；turn in交上，归还，告发；turn up出现句意：我从未料到你会出席会议。我以为你在上海。