Many years ago ,there were many old city walls in Beijing.(同
Many years ago ,there were many old city walls in Beijing.(同义句转换)
many years ago ,there were many old city walls in beijing同义句转换
____ ____ ____ ____ many old city walls in beijing.
many years ago ,there were many old city walls in beijing同义句转换
____ ____ ____ ____ many old city walls in beijing.
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