Although taking wedding photos has become more popular among graduating students, many students        _______it requires both money and courage.

 Besides proper diet, exercise is one of the key ___________of a healthy lifestyle.

 — You didn’t have a good time at the party? — No, I _____ a lot from the noise made by the band. 

A thousand words will not leave so deep an ________ as one deed.

(2014·昆明质检)The five rings on the Olympic flag________the union of the five continents and the meeting of athletes from all over the world.