10 класс. Английский язык. Входная контрольная работа. Косвенная речь

“What have you bought me for Christmas?” the little boy asked his parents.

• The little boy asked his parents what had they bought him for Christmas.
• The little boy asked his parents what they bought him for Christmas.
• The little boy asked his parents what they had bought him for Christmas.
• The little boy asked his parents they had bought him for Christmas.