A puzzle I have streets but nopavement.I have cities but no

A puzzle I have streets but nopavement.I have cities but no A riddle:I have cities but no houses,forests but no trees,ri I have streets but no crosswalk .What am I have cities but no houses；forests but no trees;rivers but I have cities but no houses,forests but no trees ,rivers Wit I have cities but no houses,forests but no trees,rivers with I have cities but no houses,forests but no trees ,rives with 猜谜：I have cities but no houses ,forests but no trees,rivers I have cities but no houses,forests but no tress,rivers with I have cities but no houses,forests but no trees,rives witho 英语问题1.I have cities but no houses,forests but no trees,river I have cities but no houses;forests（森林）but no trees;rivers（河