there used to be的一般疑问句句式是什么样的?

there used to be 一般疑问句是used there to be there used to be 一般疑问句是：Did there use to be...（对吗）there used to be 的否定句是：There didn't use to be...（对吗） there used to be的意思!RT, there used to be的一般疑问句句式是什么样的? There used to be.的反义疑问句是怎么样的? there be加used to 的反义疑问句是什么 There used to be some cities wall.的反义疑问句 there used to be walls around the city of beijing改为一般疑问句 There used to be three telephones on the desk.(改为一般疑问句) used to／be used to／be used for的区别 请问 There used to be a park. used to的一般疑问句? be used to中的used的词性 be used to的be应该用过去时还是一般时? ______ plenty of water in this river.A.There used to being B.there used to beC.There is used to beingD.There was used to be be used to 的用法? be used to的同义词 be used to 的用法 There used to be a clean river.为什么不是There used to have a clean river