假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

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    Not long after Freddy and the band became famous. They visited Britain on a brief tour. Fans showed their devoted by waiting for hours to get ticket for their concerts. His most exciting invitation was perform on a TV programme calling "Top of the Pops." As soon as the programme is over, they were truly stars. Freddy and his band could not go out anywhere without be followed. At last feel very upset and sensitive, Freddy and his band realized that they must leave a country before it became too painful for them. So they left from Britain, to that they were never to return.