Контрольные задания > 2. The exercises (doing, done) by the pupils were easy.
Вопрос:
2. The exercises (doing, done) by the pupils were easy.
Ответ:
The exercises done by the pupils were easy.
В этом предложении нужно использовать Past Participle (done), так как упражнения были выполнены учениками ранее.