Barrack Obama’s recent visit to the Asian nations clearly sent a message to the world _____ Asia is important in America’s global partnership

_________ expensive mobile phone it is!—Yes, but I think _________ style is quitefashionable,

Electric trains have now _______ steam trains in England.

It’s said that______ young people may lose their abilities to hear after five years if they listen to MP4 players which are too loud for more than five hours a week

_______ necessary for us _______ English well.