![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
Listen to the following conversation twice, and then complete the passage according to the conversation you have just heard. A passenger is checking in 1 . He would like to have a window seat. If there aren’t any left, he will take 2 .The agent is sorry to inform him that there will be 3 and his flight will be boarding 4 .But shecheerfully wishes him a nice flight when she hands him his 5 .