In the past , poor people _____ a very hard life .
_____, he always tries his best to complete it on time.
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.