问题描述：
以r结尾,写出字母分别有3,4,5,6,7,的英文单词
问题解答：
我来补答
stir mar par far character mister master caster cornor governor lunar pillar pur gangster coaster tender wonder blunder shoulder manner fair weir mayor singer dancer doctor engineer actor commentator sheer peer nor either neither author father mother tutor mentor cancer liar layer moaner letter litter partner loaner loser factor quarter grandeur cruiser miner reminder shooter foreigner settler minder pacer paver further suffer whether render surrender major minor dictato
