Read the following biography and mark the letter A, B, C and D on your answer sheet to indicate the option that best fits each of the numbered blanks.

PROFESSOR TRAN DAI NGHIA: A KEY FIGURE IN VIETNAM'S DEVELOPMENT

Professor Tran Dai Nghia was an important Vietnamese scientist and 1________. Born on October 15, 1913, in Quang Tri Province, he is best known 2________ his work in military engineering. During the Vietnam War, he 3__________ develop the country's first homemade weapons and military equipment. His inventions, like improved artillery and rockets, 4________ an important part in Vietnam's fight for independence.

In addition to his work in defense, Professor Tran Dai Nghia was a dedicated teacher. He trained many young engineers and scientists 5. _________ later supported to build Vietnam's future. After the war, he continued to share his knowledge and passion for science with students, helping to shape the next generation of Vietnamese leaders.

Professor Tran Dai Nghia is remembered for his 6________ to both science and national defense. His work helped Vietnam become stronger, and his legacy continues to inspire people in the country today.