----The light in the office is still on. ----Oh, I forget .
A. turning it off
B. to turn it off
C. turning off it
D. to turn off it
网友回答
A. turning it off
(答案→)B. to turn it off
C. turning off it
D. to turn off it
解析：考查短语：forget doing 忘记做了某事，forget to do 忘记做某事，句意：办公室的灯还亮着呢。噢，我忘记关掉了。turn off 关掉，有代词时应放在其中间，所以选B。