The word “it” in the second paragraph refers to ________.
A. the population
B. the energy
C. American literature
D. the manufacturing
* Đáp án
C
* Hướng dẫn giải
Đáp án C “it” được thay thế cho American literature trong câu trước: As a result, at the onset of World War I, the spirit and substance of American literature had evolved remarkably