Two years ago I broke my arm ____ football.

The computer was used in teaching. As a result，not only _____，but students became more interested in the lessons.

Before I left home, my mother taught me ________some simple dishes, such as noodles and garlic with vegetables.

Not until he had left his friend _______ how important friendship was for him.

When _________a career, you should consider all the aspects of a job.

      will do good to a senior student to do a part-time job when she wants to know more about society

Only when _____ in the afternoon _____ able to leave. 

China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped back to 20% _______ one day in advance.

Europeans made ______ clear that they did not want to take the Romans as neighbors.

 “We_____ the train had we left earlier,” the wife complained to the husband.

It was many years ____ American women were given the rights to vote.

_____ is necessary for us to tell him about the result.

– Tom has made great progress in spelling.– So he has and _____.

—We have to stop talking here outside ,Listen,    !—Hurry up ,or we’ll be late .

Though        of taking too many risks, the climber continued his challenge.

It is a long time ________ they separated, but it won’t be long ________ they meet again.

Only when I checked the paper once more _________ there was a mistake.

___________ that I want to eat another two.

Only ______ as a translator ______ how important it was to grasp English.

_________ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.