Who, which form?

[Jellybaby]

¿Cómo se dice...?

"It was the bus driver who told her that she had to pay for one of the kids because for every adult only one child can go free."

"Fue el revisor quien le dijo que tenía pagar por uno de los niños porque por cada adulto solo un niño va gratis."

"It's me who has to keep picking it up."
"Soy yo de la que tiene que recogerlo constantemente."

"It was him who sat there/ who made the decision."
"Fue él del que se sentó allí/ quien hizo la decision."