"are you in terested in this?"he said怎样改为间接引语?

空格在这里：Free film tickets will be sent to _________ are in terested in the file
填whoever
whoever,whatever,whichever 等,除了引导让步状语从句,还可以引导名词性的从句,这里是引导宾语从句.whoever在从句里做主语.

I went to Shanghai with my friends in summer.We visited a lot of places of interest.We also went to the She Mountain.Although it isn't tall,it is one of the tallest mountain in Shanghai.There were a lot of flowers there.In the south of the area,there was a river.I saw some fishes in the river.The view was very beautiful and the air was fresh.We took a lot of pictures.I had a very good time.
我暑假和朋友去了上海.我们去了很多旅游胜地.我们还去了佘山.虽然他不高,但是他是上海的高山之一.那里有很多花.在南面,还有一条河.我还在河里看到了鱼.风景很美而且空气很新鲜.我们拍了很多照片.我玩的很开心.