It's not necessary to explain the truth________there are air,water and sunlight,there are living things.
Either you or he _____ interested in playing chess. _____ you or he fond of music at present?
He is one of the boys who _____ here on time. He is the only one of the boys who _____ here on time.
It depends on _______ he has enough money.
______ gets homes first is to cook the supper.
_____ Wang Feng looked after the old woman a whole year moved us all.