题目内容：

语法填空

Tea is one of the most favored drinks in our life． However， the origin of tea is lost among history 1. tales． What can be roughly confirmed is that tea originated in the southwest of China． According to ancient stories， the first person 2.（ discover） the effects of tea is said to be Shennong - the father of agriculture and herbal medicine in China． It 3.（ say） that Shennong once tried 72different kinds of poisonous plants in a day and he 4.（ lie） on the ground， barely alive． At this moment， he noticed several rather fragrant leaves 5.（drop） from the tree beside him． Out of curiosity and habit， Shennong put the leaves6. his mouth and chewed them slowly． After a little while， he felt well and 7.（ energy） again． So he picked more leaves to eat and thus cleared8.（he） body from poison．

The ancient Chinese medical book 9.（ call） Shennong Bencaojing states that"Tea tastes bitter． Drinking it， one can think quicker， sleep less， move more swiftly， and see 10. clearly．"This then was the earliest book to record the medicinal effects of tea．