Let us know if it is best to travel by plane,train or bus.if

Let us know if it is best to travel by plane,train or bus.if please let us know if it’s best to travel by plane,train or Also,please let us know if it's best to travel by plane,trai 1.Please let us to know if it's best to go there by train. It’s much slower to travel by bus than to travel by plane or what is the expensive way to travel,by plane,by train or by It's to travel by plane than by train.(quick) 英语作文People travel by plane,by train,by ship,by bus.To me,the This should be fixed.Let us know if it is still happening to Did you travel to Xi'an by train or by plane? What's the l_____ expensive way to travel by train,by bus or He is going to travel by plane rather than by train.（否定形式）