----Thelightintheofficeisstillon.----Oh,Iforget

问题详情：

 ----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

【回答】

B

知识点：非谓语动词

题型：选择题