When I was young I often heard the song (sing) ______ by people.

【参考答案】

sung 句子意为：在我小的时候，我常常听到这首歌被人们唱起。在make，let，see，hear等动词的复合宾语中草药......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)