Most of the e-mail accounts at our company ________ by a virus last week.

Câu hỏi :

Most of the e-mail accounts at our company ________ by a virus last week.

A. have been affected

B. were affected

C. affected

D. was affected

* Đáp án

B

* Hướng dẫn giải

Bị động thì quá khứ đơn (by a virus last week)

Công thức: S + was/were +V-ed/V3

Đáp án đúng: B. were affected

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