(2014·湖南郴州五校第二次联考)Not only________to turn off the lights in the kitchen，but we also failed to lock the front door.

 At the foot of the mountain, __________ .

Only after they had carried out over ten experiments ______ the decision.

So absorbed ________ in the research that she didn’t hear someone knocking at the door.

Never _____________ of being admitted to Oxford University.