短文填空。根据短文内容和首字母的提示，把文中所缺词语补充出来，使短文完整、正确、通顺。
（每空限填一词。）
Did you know that tea, the most popular drink in the world (after water), was invented by accident?
Although tea wasn't brought to the Western world (1)u______ 1610, this beverage was discovered over
three thousand (2)y______ before that. According to an ancient Chinese legend, the emperor Shen Nong
discovered tea when he was (3)b______ drinking water over an open fire. Some leaves from a nearby
bush fell into the water and remained there for some time. The emperor noticed that the leaves in the
water produced a pleasant smell. (4)L______ he decided to taste the hot mixture. It was quite (5)d______
And in this way, one of the world's favorite drinks was invented.