Sofia is taking the train home from Park Street. She walks up to the fare gate and taps her CharlieCard. The gate beeps, but it does not open. There is not enough money left on her card.

Sofia does not try to squeeze through the gate behind another person. She goes to the station attendant in the booth and asks for help. The attendant shows Sofia how to add money to her card.

Amara gets on the Green Line at Brookline Hills. She wants to go downtown to Park Street. After the train starts moving, Amara sees the sign inside says Riverside. She is going the wrong way.

Amara does not panic and she does not jump off while the train is moving. She gets off at the next stop, Beaconsfield. Then she crosses to the other side and waits for a train going toward Park Street.

Ethan is at Kenmore station. He sees his train at the platform and the doors are already starting to close. Some people are running to catch it. Ethan really does not want to be late.

Ethan stops and lets the train go. He knows he should never hold the doors open or stick his arm inside. Another Green Line train comes a few minutes later, and Ethan gets on safely.

Rosa is waiting for the 66 bus at Coolidge Corner. It is dark outside and the bus stop is quiet. Rosa notices that one part of the sidewalk is dark and one part is bright.

Rosa waits in the bright light in front of a store that is still open. She stands back from the curb so she is not close to the cars. When the bus comes, Rosa steps forward so the driver can see her.

Kai is on a class trip downtown. The group gets off the train at Park Street, but the platform is very crowded. When Kai looks up, he cannot see his class anywhere.

Kai does not get on another train and he does not leave the station. He goes to the meeting spot his teacher showed the class before the trip and waits there. His teacher finds him two minutes later.

Diego gets off at Fenway station with his class. They have to walk three blocks to the museum. Diego wants to look at his phone while they walk.

Diego puts his phone in his pocket so he can watch where he is going. He stays with his group on the sidewalk. When Diego is not sure which way to turn, he asks his teacher instead of walking ahead alone.