May I lend this book to others?----No,you____选项,couldn't;mustn't; needn't;wouldn't,选哪个啊

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May I lend this book to others?----No,you____选项,couldn't;mustn't; needn't;wouldn't,选哪个啊
May I lend this book to others?----No,you____
选项,couldn't;mustn't; needn't;wouldn't,选哪个啊

May I lend this book to others?----No,you____选项,couldn't;mustn't; needn't;wouldn't,选哪个啊
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”.

couldn't