It was not until (A) the late 1970s when (B) these country people could

5/50

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.

It was not until (A) the late 1970s when (B) these country people could enjoy (C) the benefits (D) of electricity.

not until

when

these country people could enjoy

benefits

Giải thích

Đáp án B

Sửa when à that

Cấu trúc: It was not until … that: Mãi cho đến khi … thì…

Tạm dịch: Mãi đến cuối những năm 1970 thì người dân ở đất nước này mới có thể hưởng lợi ích của điện.