—MayI use your computer?—Sorry, I ________ on it.A．workB．workedC．have workedD．am-组卷网

单项选择适中0.65 引用1 组卷178

—May I use your computer?
—Sorry, I ________ on it.

A．work

B．worked

C．have worked

D．am working

2019·河北石家庄·模拟预测

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