他打开笼子，放走了鸟儿。

He opened the cage and ___set the birds ___free.

总之，动物应该被释放，并在自然中生活。

To sum up, animals should be ___set ___free and live as they should live in nature.

法官在出现新证据后决定释放囚犯。

The judge decided to ___set the prisoner ___free after new evidence emerged.