They go up and down______ A.on elevator B.in elevator C.with elevator D.by elevator

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Theygoupanddown______A.onelevatorB.inelevatorC.withelevatorD.byelevatorTheygoupanddown______A.onelev

They go up and down______ A.on elevator B.in elevator C.with elevator D.by elevator
They go up and down______ A.on elevator B.in elevator C.with elevator D.by elevator

They go up and down______ A.on elevator B.in elevator C.with elevator D.by elevator
D

选D 此处的意思是,他们通过电梯上上下下。

d

选D,他们凭借电梯上上下下。