It is not always easy for the public to see _______ use a new invention can be of to human life.
If you sleep less than 7 hours a day, you are more to catch a cold.
Three days later,the torchbearers________the Olympic torch relay in Ningbo of Zhejiang Province.
The audience_____before TV sets are listening to Yi Zhongtian’s stories with their eyes _______ upon him.
As we all know, ________life is hard for any of us.If we want to live________happy life,we must work harder.
--- Would you please help me with the box?--- .