面对警方的包围，劫匪最终选择投降。

The robber ___surrenders to the police after being surrounded.

他最终不情愿地交出了自己的研究成果。

He reluctantly ___surrendered his research findings in the end.

他最终向疲惫屈服，在沙发上睡着了。

He finally ___surrendered to exhaustion and fell asleep on the couch.