Respuesta:
1. Phill and his wife met when they were teaching in Botswana.
2. Their car broke down as they drove/driven home (ambas son correctas, pero podés escoger cuál de las dos vieron en clases para que no sospeche de la ayuda)
3. We wanted to go to Peru because we went there before
4. Hello, Karen. I thought you worked at the London office this week.
5. When she arrived her eyes were very red. I think she cried.
6. When I was a student I spent my evenings studying in the library.
Espero te sea de ayuda qq
