他一听到门铃声就突然从沙发上跳起来跑去开门。
He ___sprang up from the couch and rushed to open the door when he heard the doorbell.
这个传统习俗源于古代的农耕文化。
This traditional custom ___sprang from ancient farming culture.
他一踩到机关,门就突然弹开了。
As soon as he stepped on the mechanism, the door ___sprang open suddenly.