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Câu hỏi: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
_______ _______________, we had already put out the fire.
A. Until the firemen arrived to help
B. No sooner the firemen arrived to help
C. By the time the firemen arrived to help
D. After the firemen arrived to help
_______ _______________, we had already put out the fire.
A. Until the firemen arrived to help
B. No sooner the firemen arrived to help
C. By the time the firemen arrived to help
D. After the firemen arrived to help
Kiến thức về mệnh đề thời gian
By the time S + V(qk) + st , S + had +Vp2 +st
By the time S + V(qk) + st , S + had +Vp2 +st
Đáp án C.