不理解这到题的用法We have not decided ___________to visit next month.A.where B.what C.which D.when我做的是A 但是答案上是B哪横线上到底是填什么啊? 把理由也说一下吧

不理解这到题的用法We have not decided ___________to visit next month.A.where B.what C.which D.when我做的是A 但是答案上是B哪横线上到底是填什么啊? 把理由也说一下吧 they have the same population as we do?不理解用法,是不是省略了什么? not have 与 have not 的用法与区别 have no,have not ,don;t have的用法区别 have 的用法have什么时候用do not have 什么时候用have not we have not 缩写 we have not a lot in common .have 为什么可以直接加not ,这是什么用法?have 为什么可以直接加not ,这是什么用法?we have not a lot in common=we do not a lot in common还we do not have a lot in common? we have to 是什么用法 not have与haven‘t的区别与用法 with not without have not have no 它们的区别和用法 情态动词加上完成时的意思?could not have done must not have done should not have done would not have done 以及它们的用法? we don't have done our homework 与 we have not done our homework的区别 we fell you should not have done thatWe feel you should not have done that.这句中的feel是什么意思,什么用法~ 求解释句子的用法.what you have right here is all your need.这里现有的就是您需要的.不理解WHAT YOU HAVE RIGHT HERE. 不理解as的用法!高中课本中的句：I have learnt to live with my boy as it is .句中的as做什么用呢?还出现的例子有：someone far away is also struggling as we areI have learnt to live with my body as it is 有关why not的用法why not是否等于why don't we?why don't we是不是不常用？ That's what we have learned today. 这里的have是干什么的,有什么用法 not until的用法