He (drive) __________less than an hour when he ran out of petrol.
A. had been driving
B. had driving
C. had driven
D. drived
Ta thấy trong câu co 2 sự kiện xảy ra trong quá khứ: Anh ta lái xe chưa được 1 giờ thì hết xăng. Như vậy, hành động lái xe xảy ra trước hành động xe hết xăng.
Như vậy, ta phải chia thì quá khứ hoàn thành với sự việc xảy ra trước.
Cấu trúc: S + had Vp2
=>He had driven less than an hour when he ran out of petrol.
Tạm dịch: Anh lái xe chưa đầy một giờ thì hết xăng.
Đáp án cần chọn là: C
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