题目内容
-- What’s the matter with you?
-- _________ the window, my finger was cut unexpectedly.
A. While I was cleaning B. While cleaning
C. Cleaning D. To clean
A
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题目内容
-- What’s the matter with you?
-- _________ the window, my finger was cut unexpectedly.
A. While I was cleaning B. While cleaning
C. Cleaning D. To clean
A