My father works on a farm中为什么用到ON,而不是AT

My father works on a farm中为什么用到ON,而不是AT My father is a programmer.He works on a c___填什么 My father works at a bus s_____ where my father works a_____ a cook. my father works on a farm 改一般疑问句和对地点提问 是什么? my father is worker,he works on (machine) every day ilike my family.(改为一般疑问句）Mike's father works on a farm.(改为否定句）求救 Is it t----- that you have five sisters?The ice on the pond is too t---- for skatingher father works on a farm but my father works in a f----are you for it or a---- it?单词填空 big father farm his a works on连成一句话急 Alice's father works on a farm.是什么? My father works in a high school 译成中文意思? my father works a_____ doctor in a hospital. My father works in a big factory的一般疑问句 My father works ______ a bank in the USA my father works in a bank 改成否定句 my father works in a hospital同义句my father ( ) ( ) ( )in a hospital Er...My father works on saturday.But my mother doesn't.She___housework at home.do不对 -my father is a worker and he works hard.-so ____my father .