问题
选择题
— The light in the office is still on.
— Oh, I forgot _______. [ ]
A. turning it off
B
. turn it off
C. to turn it off
D. having turned it off
答案
答案：C
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— The light in the office is still on.
— Oh, I forgot _______. [ ]
A. turning it off
B. turn it off
C. to turn it off
D. having turned it off
答案：C