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
A (A) basic knowledge of social studies, such as (B) history and geography, (C) are considered a basic part of the education of every (D) child.
A. basic
B. history
C. are
D. child
Đáp án : C
“are” -> “is”
Chủ ngữ trong câu là A basic knowledge – số ít nên động từ to be phù hợp nhất là is