needdoing和needtobedone的区别单选题：itisaquestionthatreallyA.A.don'tneedansweringB.needn'ttobeanswered为什么不可以选B我在网上搜过needdoing和needtobedone是一样的请高手指教啊打错了

Question

need doing 和need to be done 的区别 单选题：it is a question that really_A____.
A. don't need answering B. needn't to be answered
为什么不可以选B 我在网上搜过 need doing 和need to be done是一样的 请高手指教啊 打错了 don‘t 是doesn't

Answer 1

need to do 和need doing 一样,这里的need 是实意动词
但B选项中,need是当情态动词用了,应改为doesn‘t need to be answered