the window, my finger was seriously cut.
A. Having cleaned
B. To clean
C. While cleaning
D. While I was cleaning
网友回答
A. Having cleaned
B. To clean
C. While cleaning
(答案→)D. While I was cleaning
解析：本题考查非谓语动词用法。因为手指受伤与擦玻璃同时进行，所以A项不对；又因为主句主语是my fingers,所以不能选C项。