Look, so many passengers __________ with their smart phones on t

Look, so many passengers __________ with their smart phones on the underground.
A、played
B、will play
C、are playing
D、have played
【正确答案】：C
【题目解析】：句意：看，这么多乘客在地铁上正在玩手机．结合语境可知本句描述的是现在正在进行的动作，故用现在进行时态，选Ｃ。