【小题1】 If there were more trees on the earth, there would be l_______ pollution.
【小题2】 I don’t like eating lemon. It t_______ too sour.
【小题3】 The injured people were taken to hospital i __________  after the accident.
【小题4】 Look, the expression on his face s       that something bad must have happened to him.
【小题5】 According to an ancient Chinese legend, the emperor Shen Nong d___________ tea.

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，将其填写在文后相应便会2的横线上）
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 u 【小题1】 1610, this beverage was discovered over three thousand y【小题2】 before that. According to an ancient Chinese legend,the emperor Shen Nong discovered tea when he was b 【小题3】 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. L 【小题4】 he decided to taste the hot mixture. It was quite d  【小题5】 And in this way,one of the world's favorite drinks was invented.

根据句意和所给的首字母提示，补全句子中的单词。

6. If there were more trees on the earth, there would be l_______ pollution.

7. I don’t like eating lemon. It t_______ too sour.

8. The injured people were taken to hospital i __________  after the accident.

9. Look, the expression on his face s        that something bad must have happened to him.

10. According to an ancient Chinese legend, the emperor Shen Nong d___________ tea.