All the books ________ by the students are reported to have been sent to the children in the countryside the other day.
Classification is a useful ______ to the organization of knowledge in any field.
He was ______ determined than you, but he turned out to be the first to back out.
This article was written ______ for China Daily.
You should have put the milk into the icebox, I expect it ______ undrinkable.
This is an ideal site for a university ______ it is far from The downtown area.