0061名無しさん@英語勉強中 (ラクッペ MMbb-6NN3)垢版 | 栗砲2017/11/23(木) 15:13:03.67ID:4vWcx7HVM My limited study of the mind and its potential suggests to me that we could all develop a sense of humor, if we but tried. のbutの用法が分からない