_____ turned out that this material was neither silk nor cotton.

There were many people standing by, but _____ of them were willing to help the poor boy.

—Have you got ________ ready for your trip to Hainan?—No, I need to buy a swimsuit and a pair of slippers.

Professor Zhang handed out the textbooks to all the students,except       who had already taken them.

People in the west make_______ a rule to buy Christmas presents for their relatives and friends.