Конечно, давайте разберем каждое слово, которое нужно вставить.
Wealthy - это прилагательное, означающее "богатый". Соответственно, предложение будет: "He was adopted by a wealthy western family."
Banker - это существительное, означающее "банкир". Соответственно, предложение будет: "His new father works as a banker in Sweden and he is quite rich."
Regularly - это наречие, означающее "регулярно". Соответственно, предложение будет: "Axel regularly wrote e-mails to the director of the orphanage, Jane Smitova."
Friendship - это существительное, означающее "дружба". Соответственно, предложение будет: "I understood that friendship meant a lot to a small boy."
Impossible - это прилагательное, означающее "невозможный". Соответственно, предложение будет: ". but I would never have imagined that Axel could be talking about such an impossible sum of money."
Careful - это прилагательное, означающее "осторожный" или "внимательный". Соответственно, предложение будет: "It's so touching and we are going to spend it in a very careful way."
Итак, вот как будет выглядеть полный текст:
"Axel is a 9-year-old Bulgarian orphan (сирота). He was adopted by a wealthy western family. His new father works as a banker in Sweden and he is quite rich. Axel regularly wrote e-mails to the director of the orphanage, Jane Smitova. He told her that he was saving his Christmas and birthday money to help his friends. Axel said that he wanted the money to be spent on presents for his former playmates. Later Jane said, 'I understood that friendship meant a lot to a small boy but I would never have imagined that Axel could be talking about such an impossible sum of money. It's so touching and we are going to spend it in a very careful way.' The boy saved £6,000."
Надеюсь, это поможет!