Вопрос:

When I was a child, I was interested ... sports. Choose the correct preposition.

Ответ:

Answer (English)

The correct preposition is in: When I was a child, I was interested in sports.

After the adjective interested, we use the preposition in.

Перевод (RU)

Когда я был ребёнком, я интересовался спортом.

Ответ: in.