This document discusses potential challenges that may arise in an English language classroom and provides suggestions for how to address each issue. It considers what to do if students are at different ability levels, the class is large, students use their native language, are uncooperative, don't want to talk, don't understand listening exercises, or if groups finish activities at different paces. Suggestions include using varied materials and tasks, group work, enforcing an English-only environment, addressing issues individually, and adapting activities to engagement and ability levels.