______ the beginning of the meeting, we heard a report by Mr Li.
Scientific research results can now be quickly_____ to factory production.
After _____ seemed an endless wait, it was her turn to enter the personnel manager’s office.
_____ at in this way, the present economic situation doesn't seem so gloomy.
I arrived at the airport so late that I _____ missed the plane.
She refused to _____ the door key to the landlady until she got back her deposit.