— Come and join us, Ben!— I'm afraid I can't. I'm too busy now. If I ________ time, I would certainly go.
孟子云:“人不可以无耻,无耻之耻,无耻矣。”这句话告诫我们 ( )①做人不可有耻辱感 ②不知羞耻,就永远不会有自尊
③知耻就会失去自尊 ④不知耻是可耻的