Let's match the conditions with the descriptions:
A. Emphysema is characterized by damaged alveolar walls and decreased respiratory surface, which makes it difficult to exchange gases. Therefore, A matches with II.
B. Angina Pectoris involves acute chest pain when there is insufficient oxygen reaching the heart muscle, which is typically caused by a blockage in coronary arteries. Therefore, B matches with III.
C. Glomerulonephritis refers to inflammation of the glomeruli in the kidney, which is the filtering unit. Therefore, C matches with IV.
D. Tetany occurs when there are rapid spasms in muscles due to low calcium levels in body fluids. Therefore, D matches with I.
Thus, the correct answer is A-II, B-III, C-IV, D-I.