题目内容
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 |
【答案】
C
【解析】略
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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 |