The architect has drawn plans for an extension to the house. 12/21The architect has drawn plans for an extension to the house. Plans have been drawn for an extension to the house by the architect. The house has had its plans for an extension drawn by the architect. Plans for an extension to the house have been drawn by the architect. The architect has had the plans drawn for an extension to the house. Giải thíchĐáp án đúng: C Dịch: Những kế hoạch mở rộng ngôi nhà đã được vẽ bởi kiến trúc sư.