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-What’s the matter with you?- the window, my finger was cut unexpectedly. [ ]A.

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-What’s the matter with you?- the window, my finger was cut unexpectedly. [ ]A.

—What’s the matter with you?
—______ the window, my finger was cut unexpectedly.[     ]A. Cleaning  
B. To clean  
C. While cleaning  
D. While I was cleaning

试题答案

D