15 Đề ôn thi thpt Quốc Gia môn Tiếng Anh có lời giải chi tiết (Đề số 12)

It was on 12th April, 1961 when the first human, a Soviet cosmonaut, flew into space

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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 on 12th April, 1961 when the first human, a Soviet cosmonaut, flew into space.

a Soviet cosmonaut

when

flew

into space

Giải thích

Đáp án A