I really don't know that____(do)next,Mrs Lee动词填空

问题描述:

I really don't know that____(do)next,Mrs Lee动词填空
请说明理由
不好意思打错了- - 是what 不是that

你打错了吧,应该是I really don't know what(to do)next,Mrs Lee动词不定式与疑问词连用