How much does the ticket from Taixing to Nanjing?

Where does John live?—He lives on ______ floor but he doesn’t use a lift to go up and down.

Where are you going __________ your next vacation?-We decided __________ Europe.[ ]

Most doctors and nurses ______ white clothes when they’re at work..

The Voice of China is very popular , lots of people love to _________ to watch it.