There used to be some cities wall.的反义疑问句

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There used to be some cities wall.的反义疑问句

There used to be some cities wall.的反义疑问句
There used to be some cities wall.的反义疑问句

There used to be some cities wall.的反义疑问句
两种:
There used to be some cities wall,usedn't there?
或:
There used to be some cities wall,didn't there?

两种:
There used to be some cities wall, usedn't there?
或:
There used to be some cities wall, didn't there?

There used to be some city walls, didn't there?或者usedn't there?都可以的。其他如:
He used to be a driver, usedn't he?/didn't he?