Question

Задание  Поставить глагол-сказуемое одного предложения из текста во все временные формы (Present, Past, Future) групп Continuous и Perfect в страдательном залоге
On the average students attend school approximately six hours a day.
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Answer 1

On the average school is attended by students approximately six hours a day. Continuous:
1) Present: is being attended
 2) Past: was being attended
3) Future –––

Perfect:
1) Present: has been attended
2) Past: had been attended
3) Future – will have been attended