阅读下面的短文,从所给单词中选择合适的单词补全短文,每空只填一词,每次只准用一次
【shorter ,longer ,old ,older ,younger ,one ,two ,three ,reading ,watching ,Her ,his】
Jack is 12 yeahs _____ .He has ________ friends .They are Chen Jie ,Amy ,Mike .Sarah is 12 .She has long hair .Chen Jie likes playing the piano very much .Amy is 13 .She is _____ year _____ than Jack ._______ hair is not long .It is _______ than Chen Jie’s .Amy likes ________ books.Mike is 10 .He is ______ years _______ than Jack .Climbing mountain is _______ hobby .They often play together .