Not until I dropped off from school ____ how much time I had wasted.

 There are some health problems that, when ______ in time, can become bigger ones later on.

At the bell, the door opened and _____, dashing towards the dinning hall, all shouting and laughing.

We are always told that only through hard work       our goals in our study.

If my brother doesn’t go to the evening party,          .

 Not until they left school     how much their teachers loved them and helped them.

Not for a moment ______ sightseeing while in Europe.

She never laughed, _______ lose her temper.

 Not until the bus disappeared in the distance ________ her school bag was gone.

We students should treasure the short senior school’s study life of three years. Once ________, the opportunity can’t get back.

______ for the free tickets, I would not have gone to see films so often.

Across the Yangtze River _____ more than one bridge, the Nanjing Changjiang Bridge being the first one.

It was announced that only when the fire was under control          to return to their homes. 

---David has made great progress recently.---_____, and______ .

—I studied in the United States for 3 years. —_______.

On no account ________ to our plan for the picnic.

On top of the hill ______, whose style can be traced to the ages of the Roman Empire. 

Only when _______ be possible to sign the papers.

Only when Jim was away from home _______ how nice his family was. 

No sooner __________ these words than the warden hit him on the head with the soup spoon.