下面这段话有没有错误

题目

下面这段话有没有错误
Good morning,ladies and gentlemen,do you like my song?The speech I address today is “Expo,makes life more exciting” One time,I saw a stranger drop a rubbish on the ground.Then I heard a sweet voice:"Don't do that,Daddy.If some foreigners come here,they will dislike WuXi."The uncle smiled at his little girl and then picked up the rubbish.I feel very happy because I discover people are in progress.Smiling teachers,lovely students,satisfied parents,and harmonious campus…these are all things that I dream.Of.Because of Expo,they all came true.If the theme of Shanghai's World Expo is "Better City,Better Life",then I think the human theme of the Expo should be "Expo,makes life more exciting." Let’s join hands with our own actions,with our own wisdom,write a glorious part of our Expo.

答案

第一行 song 应该改成 songs 第三行 One time应改为Once upon a time 那个drop是动词 不用改 不过rubbish 好像前面不能加a - - 纠结 改着太麻烦了 感觉好多错误呢