Jane liked going to the park with her mum, One day when they were there, she said, "There is so much rubbish on the ground." They looked around. There were old 20 , waste paper and cans on the ground.

Преобразуем слово «BOX» так, чтобы оно грамматически соответствовало содержанию текста.

В данном контексте необходимо образовать множественное число существительного, обозначающего предмет (коробка).

Следовательно, нужно образовать множественное число от слова box.

Во множественном числе слово box будет boxes.

Jane liked going to the park with her mum, One day when they were there, she said, "There is so much rubbish on the ground." They looked around. There were old boxes, waste paper and cans on the ground.

Ответ: boxes