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