Direction: In the sentences, certain words are in bold and numbered from A to H, which are the possible pairs to be interchanged. Choose the pair(s) of the words that need(s) to be interchanged to make the sentence grammatically correct and meaningful.

a. Death comes(A) to all, but great(B) achievements raise a monument which shall reviving(C) until the sun grows(D) old.
b. Nobody(E) fully understands the enormity(F) and the complexity of the task of endure(G) the country's(H) economy.