they usuall go there on a train (改为同义)they usuall go there on a train (改为同义句)they usually -a train --there

问题描述:

they usuall go there on a train (改为同义)
they usuall go there on a train (改为同义句)
they usually -a train --there

they usually go there by train.

they usually (take) a train (to) (get) there