问题
选择题
—The light in the room 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 room 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