While I ....... along the road, I saw an accident. A. had cycled B. cycled C. have cycled

Câu hỏi :

While I ....... along the road, I saw an accident.


A. had cycled



B. cycled


C. have cycled

D. was cycling

* Đáp án

D

* Hướng dẫn giải

Chọn D.

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