my uncle revisited the farm（ ）he had worked fifteen years before请问下这里为什么是用where 而不用that?

my uncle revisited the farm（ ）he had worked fifteen years before请问下这里为什么是用where 而不用that? my father doesn't talk as < >as my uncle My uncle dosen't smoke.My father dosen't smoke,either.合并成一句话【 】my uncle 【 】my father 【 】. My uncle doesn't live there anymore 同义句My uncle ____there ____ ____. My uncle isn't good at dancing 同义句=My uncle ( ) ( ) ( ) ( ) dancing. My uncle doesn't like bananas.(改为同义句) haven't heard from my uncle for years. My uncle isn't in now.(同义句) =My uncle ____ ____.=My uncle____ ____ ____. visited my uncle visited my uncle My uncle ________(check) my computer in the study.It doesn't work well This isn't my MP4 player.__ is at my uncle's. my uncle has a brother but this man isn't my unclehe is... This isn't my MP4 player.__ is at my uncle's.填MINE为什么 my uncle's daughter ( ) My uncle s I () my uncle My mother opened the door(very quietly).对划线部分提问为( )( )your mother open the door.My uncle isn't good at dancing.=My uncle ( )( )( )( )dancing. my teacher knows more than a:my uncle knows b:my uncle does c:they know d:they don't knowmore than 后面要填什么啊？