when i was passing the gate of the park,my ears were filled with the sounds of music ,singing,birds,laughing.
时态你也可以改成现在时（我这用的是过去式）,
你被动语态没学的话,也可以把后半句my ears were filled with the sounds of music ,singing,birds,laughing.改成 the sounds of music ,singing,birds,laughing etc.filled my ears