问题
选择题
Mum, you really need to have a rest! You in the kitchen ever since you came back home three hours ago.
A．had worked
B．were working
C．have been working
D．worked
答案
答案：C
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Mum, you really need to have a rest! You in the kitchen ever since you came back home three hours ago.
A．had worked
B．were working
C．have been working
D．worked
答案：C