Do you have any idea___to do to help us?
问题描述：
Do you have any idea___to do to help us?
A of how they can B of what they can
求解释A错误的原因
答
横线后应该没有to,
Do you have any idea___ do to help us?
答案为B嗯 是的 原来多打了一个to of how...是他们如何做去帮助... of what 他们做些什么去帮助 ...请问错误在哪 没有这种形式还是 ？do是及物动词要有宾语，what 可做其宾语，how则不行，of what they can do或of how they can do it.