At the new year day, Lily's grandparents came to see her from the countryside. They lived at there for a long time. On the way home, Lily introduced some changes about the city to them.

Lily=L Grandpa & Grandma = G

L : Happy new year ， grandpa and grandma. Long time to see you.

G : The same to you, Lily.

Lily helped them to pick up some luggage and brought them to the bus station.

G : What a big station here! There weren't any stations here. When we wanted to go some places, we only walked to there or by a track.

L : By a track?

G : Yes, some track used to carry pigs, stones or rubbish.

L : Oh, that is surprise to me.

Five minutes later, they arrived at Lily's home.

L : Please get up. It's here.

G : Woo, it's so fast now. At that time, we spend 40 minutes to arrive here. But now, we only spend 5 minutes. The city is quite different.