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
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
C 解析： 考查倒装。句意为：我们不仅忘记关厨房的灯，而且也忘了锁前门。not only位于句首时，其后的成分要部分倒装，故选C项。B项为全部倒装，故排除。