【思路】

Agree +【Efficiency】朋友一起学得更高效更多

arrange：高中一起学数学

action：互相提问、互相测试...

anticipate：分数提升...

【范文】

I completely agree that having friends in class helps students learn more, mainly because collaborative learning boosts efficiency.   

For instance, in high school, I struggled with advanced math-especially with complex problem-solving.But my close friend, who was in the same class, often studied with me afterschool. We’d explain tricky equations to each other using simpler terms, quiz one another before tests, and even divide up practice questions to save time. Thanks to this teamwork, my test scores improved by nearly 20% in one semester. Wthout a friend in class, I’d have wasted hours stuck on problems alone.