Задать следующие вопросы : general, alternative, special, subject, distinctive the teacher has explained this rule tous

The teacher has explained this rule tours.
General question:
Has the teacher explained this rule tours?
Special question:
What has the teacher explained?
Subject question:
Who has explained this rule tours?
Alternative question:
Has the teacher or the lecturer explained this rule tours?
Distinctive question:
The teacher has explained this rule tours, hasn't he/she?