English is a language shared by several diverse cultures, _________ uses it differently.
Three photos of a school teacher saving two children in a lake have been posted online on October 10, ________ heated discussions on Weibo immediately.
Nuclear radiation is said __________ the biggest health challenge in Japanese Earthquake over the past few months.
Tom’s English is not good, so he devoted all his free time to __________ it.
To his surprise, Jack found his son _______as Santa Claus on Christmas Eve.
______ his expression, he didn’t _____the driving test.