What kind of drug did he discover?
Giải thích
He discovered penicillin.
Giải thích:
Thông tin: ...and in 1928 he discovered a new drug and he called it "penicillin".
He discovered penicillin.
Giải thích:
Thông tin: ...and in 1928 he discovered a new drug and he called it "penicillin".