【答案解析】I think the most important quality in friendship is loyalty. Loyalty means always being honest to your friends and staying right beside them when they feel down. I'd love to talk about Tom. We've been good friends since we were kids. Once I forgot to bring my lunch to school, Tom immediately took out his lunch and gave it to me. Besides, he is always the first one to point out my weakness directly. Thanks to his straightforwardness, I made quite a progress. I really appreciate his loyalty and treat him as my lifelong friend.