PENICILLIN WAS DISCOVERED B

40. - ĐAP AN ĐÊ KIEM TRA 1TIET SAU BAI 4 5 6
ĐAP AN ĐÊ KIEM TRA 1TIET SAU BAI 4 5 6
40. “When...?” - In 198A. penicillin was discovered B. was penicillin discoveredC. did penicillin discovered D. did penicillin discover