过了一会儿，他放松了下来。

After a while he ___loosened ___up.

可以肯定的是，一个人需要找到能让他放松下来的东西。

What is sure is that one needs to find something that will make him ___loosen ___up.

在社交场合，你应该试着放松一点。

You should try to ___loosen ___up a bit in social situations.