(2013·安徽重点中学一模)Not only to turn off the lights in the kitchen, but we also failed to lock the front door.
A. we forgot
B. forgot we
C. did we forget
D. we did forget
网友回答
A. we forgot
B. forgot we
(答案→)C. did we forget
D. we did forget
解析：选C 考查倒装。句意：我们不仅忘记关厨房的灯，而且忘了锁前门。not only位于句首时，其后的成分要部分倒装，故选C。B项为全部倒装，故可排除。