SCHOOL EDUCATION SYSTEMI. HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT

ON THI TRAC NGHIEM TIENG ANH 12BAM SAT

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Đáp án tham khảo

149. “When ?” “In 1928. ”

A. penicillin was discovered B. did penicillin discovered

C. was penicillin discovered D. did penicillin discover