Answer: When the money runs out, the friendship ends.
Explanation:
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Answer Entro al Metro a trabajar a las ocho y media de la mañana, salgo a las dos y media de la tarde.
Explicación: La persona que escribe, trabaja en el Metro y explica su horario, cuando entra y cuando sale del trabajo.
Explanation: The person who writes, works in the Metro and explains his schedule, when he enters and when he leaves work.
Se chocan
We use “se” because you are referring to a group of passengers. Se is used for “they” when the group is plural or singular third person.
We use “chocan” because they are bumping into other passengers which is plural. Chocan is for plural.