If she _____the Great Wall next Sunday, _____ I. [ ]

Only when you are in poor health_______ realize that health is _______.

Most of us still wonder ___________ it is ________ makes those honest peasant workers, without being paid at all, resign themselves to the bosses.

When shall we meet again?— Make it __________ day you like. It’s all the same to me.

________of the land in that district________ covered with trees and grass．