Respuesta:
1. Did you go to the beach?
2. Did she find him at school?
3. Did they sell their house last week?
4. Did your parents live in Boston?
5. Did we work together for many years?
6. Did you eat cereal and chocolate when you were a child?
7. Did you spend 100 Euros on your new books?
8. Did Julie and Peter see Jurassic Park last night?