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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?