A simple honk (汽车喇叭声) from the bus is one part of a secret code (代码) between the driver and ______ who live in a far-away village in Wanzhou district, Chongqing.

When seeing a schoolbag hanging from the doorknob (门把手) of an old house along the road, the bus driver drives towards the roadside and ______ a honk to answer the “code”. Then a boy runs outside, takes the schoolbag, and gets on the bus ______.

The boy’s parents work far from home, leaving him in the care of his grandmother. The boy is in ______ ninth grade this year. He comes home every Friday and goes back to school in the city every Sunday. To make the journey ______ , he and the driver, Cheng Lin, have developed a special “code”. When the boy’s schoolbag is hanging outside the house, it “tells” Mr Cheng, “Today, it’s time to go back to school. I need ______ the bus.”

The parents of the boy ______ when they know this. They show their thanks to Mr Cheng and feel happy that someone takes care of their son ______ they are away.

Mr Cheng has been driving the bus for many years. There are many left-behind children on this bus line. The driver wonders ______ something for the children, so he has paid more attention on Fridays and Sundays.

The driver’s ______ to the student touches the hearts of many people. One wrote online, “He is a good driver. The schoolbag is their code, packed with love inside.”