WAS PENICILLIN DISCOVERED B

58. - BÀI SOẠN BAI TAP ON TRAC NGHIEM LOP 8
BÀI SOẠN BAI TAP ON TRAC NGHIEM LOP 8
58. – “ When……….? ” - “ In 1928. ”A. was penicillin discovered B. penicillin was discoveredC. did penicillin discovered D. did penicillin discover