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.
Automobile (A) began to be equipped by (B) built-in (C) radios around (D) 1930.
A. automobile
B. by
C. built-in
D. around
Đáp án B.
Đổi by → with
To be equipped with: được trang bị bởi