The moment the signal flared, the racers accelerated their vehicles towards the finish line.

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Sentence-rewriting: Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Scarcely had the signal ignited when the racers urgently steered their vehicles to complete the course.

The racers wasted no time in starting their vehicles once the signal announced the beginning of the race.

Subsequent to the burst of the starting signal, the racers enthusiastically gathered at the starting line to strategize their race.

Barely had the signal blazed than the racers propelled their vehicles to triumph in the competition.

Giải thích

Đáp án cần chọn là: A

 Phương pháp giải: Đảo ngữ chỉ thời gian (Ngay khi... thì...).

 Giải chi tiết:

Gốc: "The moment..." (Ngay khoảnh khắc tín hiệu lóe lên, các tay đua tăng tốc).
A. "Scarcely had the signal ignited when..." (Vừa mới... thì...).
Cấu trúc: Scarcely + had + S + V3/ed + when + Clause.