____ a busy city, Pompeii was virtually destroyed by the eruption of Mount Vesuvius in 79 A.D

Câu hỏi :

____ a busy city, Pompeii was virtually destroyed by the eruption of Mount Vesuvius in 79 A.D

A Once    

B Once it was     

C  It was once 

D That once

* Đáp án

A

* Hướng dẫn giải

Phương pháp giải:

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