It is the protection for the trees___________ really matters, rather than how many trees are planted.

With the touch of a button or the click of a mouse, people will find abundant information from the largest libraries and museums in the world .

151. The passenger _____ at his watch andfound that it was too late when he arrived the railway station.

Is it to hold the 2010 World Exhibition _______ makes Shanghai the focus of the world?

_________ with such a failure, Arnoldhas no courage to live on the earth.