Travelling by air is ______ more expensive than by train eve

Travelling by air is ______ more expensive than by train eve Travelling by air is _____ than by train.(expensive) Travelling by plane is more expensive than travelling by tra travelling by train is more comfortable than by air 这句话谁是主语? ----- I think travelling by train is more comfortable than t Travelling by train is more relaxing than___. Travelling by plane usually ( ) more than travelling by trai You will feel travelling by plane than by train填空 But travelling by train is quite d_____. travelling by air Travelling by air.. I think traveling by train is more comfortable than raveling