there used to be 一般疑问句是used there to be

问题描述:

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 一般疑问句是:
Did there use to be
there used to be 的否定句是:
There didn't use to be