May I lend this book to others?----No,you____选项,couldn't；mustn't； needn't；wouldn't,选哪个啊
问题描述：
May I lend this book to others?----No,you____
选项,couldn't；mustn't； needn't；wouldn't,选哪个啊
答
couldn't
答
mustn't
在回答用may征求同意的问题时,如果是否定“不可以”表示禁止,必须用mustn't.
couldn't的“不能”是能力,不是“不允许”.