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-----What's hte matter with you?-----__________hte widow,my

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-----What's hte matter with you?-----__________hte widow,my finger was cut unexpectedly.
为什么选While I was cleanig
答案是while I was cleaning,
while有“当.的时候”之意,相当于when,while还可以连接前后两个正在进行的动作,如:Jack is cleaning the window,while Mary is sweeping the floor.希望我的答案能帮助你.