_____is known to us all is that the old scientist, for____ life was hard in the past,still works very hard in his eighties.
It never occurred to me _____ you could succeed in persuading him to change his mind.
Why do you keep this completely ____ umbrella, which is broken?
Sometimes you need to give a stain _____ before adding the garment to a load of laundry.
The______ look on his face shows that he’s greatly ______.
If you cheat in the examination, you ought not to _______ it.