К предложению: they often go to the swimming pool on Sunday. Поставить все вопросы.

на какие ты отметки учишся

только честно

They often go to the swimming pool, are they? (tag question) Are they go to the smimming pool? Have they go to the swimming pool? Did they go to the swimming pool yesterday? Will they go to the swimming pool tommorow? Всё вроде