Где ошибка 1)In class yesterday we made a poster for the school play.2)Katy founded an old exercise book from Year 5.

Yesterday in class we made a poster for the school play.

Katy found an old exercise book from Year 5.

Объяснение:

Слово "вчера" ставится в начале.

Правильная форма глагола "to find"  в времени – found