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

Câu hỏi

It was not until 1937 when Southern source of the Nile River was discovered.

A. was

B. until

C. the

D. when

Đáp án
D. when

Câu hỏi thuộc Bài tập:

Bài tập Tìm lỗi sai - Luyện thi THPT Quốc gia Tiếng Anh (Mã 004)