Hỏi: Of all the art-related reference and research library in North America, that of the Metropolitan Museum of Art in New York City is

Hỏi:
Of all the art-related reference and research library in North America, that of the Metropolitan Museum of Art in New York City is among the largest and most complete.
A. Of all
B. reference and research
C. library
D. that of

C là đáp án đúng
Lời giải:
library => libraries
Giải thích: Cấu trúc sau “of all” là danh từ số nhiều, nghĩa: trong số tất cả