By the time the ambulance approached, the man . A. would die B. had died C. died D. dies
By the time the ambulance approached, the man .
A. would die
B. had died
C. died
D. dies
By the time the ambulance approached, the man .
C. died
Đáp án đúng là: B
Giải thích: By the time + quá khứ đơn, quá khứ hoàn thành.
Dịch: Trước khi xe cứu thương đến, người đàn ông đã tử vong.