options: m : it 's not the rush hour now . you can take the bus . m : you 'd better hurry up and take the subway . i 'm afraid you wo n't be in time . m : it 's a good idea to go to the airport by subway . m : wow , i envy you that you can go to nanjing by train .
article: f : can i get to beijing west railway station by bus ? m : ah , it 's rush hour now . you can go there by subway . f : ok .