During the 1950s,R&.B changed modern music further and led to____we know as rockand roll.
It is good manners to eat up_______is left in your plate.
Alibaba has become China’s largest online commercial company, _____ a profit of 6.42 billion yuan in 2011.
The Diaoyu islands, in the East China Sea between China and Japan, _______ to China since ancient times.
21st Century is ______ a newspaper. It helps us to improve our English a lot.
This is his only request that the room ______ after being used.