Einstein’s Theory of Relativity is so________that most of us can not understand it.[ ]

It is not until January ,2013the Presidential election of the United States comes to an endwe’ll know who is the new president.

As fuel prices rose, bus companies raised their fares and _____.

______ is the population of Shanghai —-Thirteen million people , I think

So you think we should sell the houseand move to the country—_______ We badly need the fresh airthere