— There is only three days left, but we still have a pile of papers to deal with.— Don’t worry. We have already ____ two thirds of them after all.
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