It was not until 1937 when Southern source of the Nile River was discovered.
Kiến th ức: Cấu trúc câu “It was not until … that …”
Giải thích: Cấu trúc "It is/was not until..." phải nối với mệnh đề theo sau b ằng "that" không dùng "when". when => that
Tạm dịch: Mãi đến năm 1937, nguồn sông Nile ở phía Nam được phát hiện.
Đáp án: D
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
Every member of the class were invited to the party by the form teacher.
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In a restaurant, if we want to call the water, we can raise our hand and wave it slight to signal that we need assistance.
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Neither of the two candidates who had applied for admission to the Industrial Engineering Department were eligible for admission.