Câu 605:

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

“When ______?” – “In 1928. ”

        A. did penicillin invented        B. penicillin was invented

        C. did penicillin invent                D. was penicillin invented

Đáp án

was penicillin invented

Giải thích

Kiến thức bị động thì quá khứ đơn.

S + was/were + P2/V_ed + by + O

Tạm dịch:

“When was penicillin invented?” – “In 1928. ”: “Penicillin được phát minh khi nào?” – “Vào năm 1928. ”

Đáp án: was penicillin invented.