The development of industry has been ____gradual process throughout _____ human existence, from stone tools to modern technology.
The victim was still________what had happened when the doctor arrived but he lost________soon after that.
We'll have to find a job, ________.
This vase wasn't________properly before it was put away.
________the farmers were pleased the good harvest of this year.
My father made me a promise________I got a good mark he would buy me a present.