Read the following passage and mark the letter A,B,C or D to indicate the correct answer for each of the blanks. 

The citadel of the Ho Dynasty was built according to the Feng Shui principles, (1) ____ the flowering of neo-Confucianism in the late 14th century in Viet Nam and its spread to other (2) _____ of East Asia.  According to these principles, it was located in a landscape of great (3)______ beauty on an axis (4) _____ the Tuong Son and Don Son Mountains in a plain between the Ma and Buoi Rivers. In terms of architectural history, the citadel of the Ho Dynasty (5) ______ an important role in the planning and building of urban areas in Viet Nam. It shows the uniqueness (6) _____ the constmction of a citadel in general and a stone citadel in particular, and a breakthrough in Viet Nam’s tradition of citadel building.

Thanks to the unique construction techniques, all the (7) _____ stone sections are intact and have not been (8) _____  by time and weather or by recent urban encroachment. The citadel of the Ho Dynasty is an architectural (9) _____ of the 14^th century with impressive architecture of the walls and other parts. The citadel buildings represent an outstanding example of a new (10) ______  of Southeast Asian imperial city with a combination between the Vietnamese architecture and the unique building techniques of Southeast Asia and Eastern Asian.

The citadel of the Ho Dynasty was built according to the Feng Shui principles, (1) ____ the flowering of neo-Confucianism in the late 14th century in Viet Nam…