Lisa, now stop for a short break. You should know that you all the morning
题型：不详难度：来源：
Lisa, now stop for a short break. You should know that you all the morning.| A．are working | B．had been working | C．have been working | D．have worked |
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答案
| C |
解析
| 考查动词时态。根据now stop for a short break，可知现在还在工作，再根据all the morning，可知整个早晨一直在工作，所以要用现在完成进行时态，表示从过去开始到现在一直在进行的动作。有可能还会进行下去。所以选C。 |
举一反三
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