The boy joyfully ate up every single bit of the food on the table, his dog at him with its mouth watering. A. staring B.stared C.to stare D. having stared
I don't doubt ________ he'll come.
Why the explosion occurred was ____the laboratory attendant had been careless.
They came to the conclusion ________ by a computer.
________ is no reason for dismissing her.
Mary is ________ someone might recognize her.