虽然学校餐厅人潮拥挤，但排队的队伍井然有序，学生们打好饭都能找到一张桌子坐下来用餐。(order)

Although the school cafeteria was crowded, the waiting lines were still in good order and all the students could find a table to sit at after they got their food.

考查让步状语从句，时态，固定短语，时间状语从句和主谓一致。句子描述过去的事情，时态用一般过去时，“虽然” 是although，引导让步状语从句，“学校餐厅” 是the school cafeteria，“人潮拥挤” 是be crowded，主语the school cafeteria是单数，因此be动词用was，“排队的队伍” 是the waiting lines，“(仍然) 井然有序” 是be still in good order，主语lines是复数，be动词用were，“学生们都能” 是all the students could，“找到一张桌子坐下来用餐” 是find a table to sit at，“打好饭” 是after they got their food，after引导的时间状语从句。故翻译为：“Although the school cafeteria was crowded, the waiting lines were still in good order and all the students could find a table to sit at after they got their food.”。