阅读短文,根据短文内容及首字母提示,在空白处填入一个适当的单词.

阅读短文,根据短文内容及首字母提示,在空白处填入一个适当的单词.
Nearly 2,000 years ago,during the Han Dynasty,there was a person called Ying Chen.One day,he invited Du Xuan to his house and treated him with wine.On the wall of the room (71) h___________ a red bow (弓).Its shadow appeared in Du Xuan’s cup.Du Xuan took the shadow for a snake.He was (72) f___________ but he didn’t refuse out of politeness.He drank the wine (73) w___________ his eyes closed.
When he was back at home he felt so sick that he could (74) h___________ eat and drink any more.He sent for the doctor and took some (75) m___________,but nothing could cure him.(76) W_________ Ying Chen went to ask Du Xuan how he got so seriously ill,Du told him about the snake in the wine.Chen returned home,thought hard,(77) b_________ he could not find an answer.(78) S_________ the bow on the wall caught his eyes.“That’s it!” he shouted.He immediately sent for Du Xuan.He seated him where he sat before and offered him a cup of wine.Du Xuan saw the snake-like shadow again.Ying Chen said,pointing at the shadow,“The ‘snake’ in the cup is (79) n_________ but a shadow of the bow on the wall!” Now that Du Xuan knew (80) w__________ it was,he felt much easier.And strange enough,his illness disappeared the next moment.
This story turned out to be the idiom “Bei Gong She Ying”.