As food is to the body, ______ is learning to the mind.

 It is in the year of 2010        a severe drought hits Yunnan province. 

Thanks for your kind help! We would have _________ lost the game!

______ the day went on, the weather got worse.  

--With the country’s pension fund gap becoming wider than ever, retirement age should be postponed immediately. ---Easier said than done.          we take all factors into account, we shall be faced with some other social problems.