Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
At least three-quarters(A) of that book on famous(B) Americans are(C) about people who lived(D) in the nineteenth century.
A. three-quarters
B. famous
C. are
D. lived
Đáp án : C
Chủ ngữ số ít “the book” nên tobe chia theo ngôi số ít, “are”-> “is”.