问题
选择题
. You must do your homework now; you ______ computer games all the evening.
A．have been playing
B．play
C．are playing
D．played
答案
答案：A
考查时态。句意：你现在必须做作业；你整个晚上都在玩电脑游戏。结合语境可知下文描述的是现在已经完成的过去一直在进行的动作。故用完成进行时态，选A。