问题
选择题
____the window, my finger was seriously cut. [ ]
A. Having cleaned
B. To clean
C. While cleaning
D. While I was cleaning
答案
答案：D
搜题请搜索小程序“爱下问搜题”
____the window, my finger was seriously cut. [ ]
A. Having cleaned
B. To clean
C. While cleaning
D. While I was cleaning
答案：D
