This document provides an introduction to spoken interaction activities at the C1 level based on the Common European Framework of Reference for Languages. It outlines the objectives of C1 level interaction, which includes expressing oneself fluently and precisely, using language flexibly for social and professional purposes, and relating contributions skillfully to other speakers. The document then focuses on providing language structures to support three main goals: giving opinions, negotiating, and interviewing. It provides example phrases for stating and qualifying opinions, introducing opinions, and reacting to other opinions. It concludes with sample discussion topics for a partner to respond to in order to practice these skills.