Many years ago,there were many old city walls in Beijing.的同义

Many years ago,many old city walls (still) existed in Beijing。
Many years ago,there stood / (existed) many old city walls in Beijing。
Many years ago,Beijing had many old city walls。
再问： Many years ago,there were many old city walls in Beijing ____ ____ ___,there were many old city walls in Beijing
再答： 看来应该是其他诸位的回答： Several years ago 或者 Long time ago , you can make the choice, GOOD LUCK。