Answer:
5. Cierto 6. Oir *salir is irregular in the yo form*
Explanation:
Gerundio serves to talk about actions currently its equivalent in English of saying walking or talking (ing ending). Oir doesn't follow the regular conjugation form.
- Hace 3 horas que Ricardo espera
Is B or C I’m fluent in Spanish and I don’t really know what The expression really mean but I’ll go with C
