46. ______ talking to ______ sister?

C) Whose / your **Explanation:** The correct answer is 'Whose / your'. The sentence is a question: 'Whose talking to your sister?' 'Whose' is a possessive interrogative pronoun, and 'your' is a possessive adjective. **Перевод на русский:** Кто разговаривает с твоей сестрой?