My father ( ) on business for two weeks.He'll return in 3 days.A.left B.has left C.has gone D.has been awayhas been away 谁可以解释下为什么?最好把其他几个选项不是的原因讲一下,thanks.

My father goes to school by bus.(同义句)my father goes to school _____.填on a bus .in my father’s car/on a bus为什么一个是in 一个是on?.in my father’s car/on a bus为什么car 前用IN而bus 前用on呢? on my father's My father drive a bus.变疑问句 My father works at a bus s_____ my father goes to work on foot,but my mother towork,为什么要用rides,不用take a bus,by bus My father goes to work( )his bike,while my mother goes( )bus.A.in,on B.by by C.on,by D.by,on 选择：－How do you go to work?－A.By a bus B.On a car C.In my bike D.In my father's car, My father often go home by bus同义句 My father goes to work by bus 的同意句 My father often___(go)to work by bus. my father ---(be)a bus driver?横线上填什么? my father used to ( )to go to woruk.by bus,take a bus,took a bus,takes a bus My father goes to work by bus(同义句转换) My father ___ ___ the bus___work 我爸爸今天早上在公共汽车上偶然遇到一位老朋友my father( ) meet an old friend by accident on the bus this morning. My father usually goes to work by bus （ by bus提问） My father is a bus driver_(对a bus driver提问） My father is a bus driver_(对a bus driver提问)_____ ______ is ______father?