这位叛军领袖因叛国罪被处死。

The rebel leader was ___put ___to ___death for treason.

叛徒被抓获并被处死。

The traitor was captured and ___put ___to ___death.

在一些国家，重罪犯可能被处死。

In some countries, serious criminals can be ___put ___to ___death.