He _____ to us that those eggs which were _____ on the table had been _____ by snakes.
The boy was badly hurt in his head, however, still _____. .
It is __ ___ for a person in his position to make such a mistake.
So far his spoken English is improved _____ .
It is _____ impossible.
Don’t leave your work____, . A done half B. half done C. a half done D. done a have