---John, why are you so upset?
---I­­­ my cell phone all morning but it is nowhere to be found.A.am looking forB.have looked forC.have been looking forD.had looked for
网友回答
C解析试题分析：考查时态，由后面的时间状语all morning可以知道动作一直在发生，所以是C，句子意思“整个早上我一直都在找我的手机，但是任何地方都找不到”
考点：考查时态
点评：时态是初中和高中阶段的重点和难点，是高考常考内容，时态的考查主要看时间状语，时间状语all morning很容易知道时态
即学即练：Traffic conditions in Beijing ________ for decades. At first people only plained about jams during rush hours，but today every hour is rush hour.
A. is worsening B. have worsened
C.worsened D. have been worsening
选D