北通阿修罗和潘多拉:She needn't stop eating rich food, she'd better eat ( )

She needn't stop eating rich food, she'd better eat ( ) needn't 和 don't need 的区别 needn't 后面加to do 还是 do？ needn't（寒假里）,mustn't（公园里）造句 a.must b.can't c.may d.needn't We needn't buy any ___. There are many in the fridge. ______ I look after the patients tonight? No , you needn't I think they needn't stay 改I don't think they need to stay 为什么加to you needn't clean it for the work is too ____(tire) 为什么用tiring 不用tired May I come in? No, you ___. A. mustn't B. needn't C. may not D. aren't