Choose the correct passive voice: They should shoot the traitors dead.

The traitors should be shot dead.

The traitors will be shot dead.

The traitors are shot dead.

The traitors could be shot dead.

The traitors should be shot dead.

In passive voice, the subject (traitors) receives the action, and the auxiliary verb "should" remains unchanged.

The structure changes from "They should shoot" to "The traitors should be shot."