loosen|loosened

你能帮我拧松这个罐子盖吗？它卡住了。

Can you help me ___loosen this jar lid? It's stuck.

过了一会儿，他放松了下来。

After a while he ___loosened ___up.

随着时间的推移，那颗旧螺丝开始松动并脱落。

Over time, the old screw began to ___loosen and fall out.