短文改错(共10小题；每小题1分，满分10分)
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处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(Λ)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：  1．每处错误及其修改均仅限一词； 2．只允许修改10处，多者(从第11处起)不计分。
Yesterday I showed my friend Peter around Beijing city. We start off early on the morning. First we went to the Forbidden City, where is one of the most popular tourist place in Beijing．Then we visited the History Museum．We observed a lot valuable things in it but we learned a lot about Chinese history．After a quick lunch, we went to Beihai Park．Upon our arrival, we were all struck by its beautiful scenery．We had a great fun in the park．We didn’t go back until late in the afternoon. Peter was very pleased with my arrangement that he invited me to a good western restaurant to have a big meal．
We did have a wonderfully time. What an unforgettable experience it was!