英语,按要求变换下列句型.1.He has given away all the gifts to the childr

英语,按要求变换下列句型.
1.He has given away all the gifts to the children.(否定句)
He ______________________ away all the gifts to the children.
2.They thought he was the best writer in the newspaper.(否定句)
They __________________ he was the best writer in the newspaper.
3.His best friend gave him this present.(对划线部分提问) _____________ him this present?