27. They’re arguing on who, on earth, is known for the great discovery ______ penicillin, an effective bacteria killer.
A.making up | B.making into | C.made of | D.made from |
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27. They’re arguing on who, on earth, is known for the great discovery ______ penicillin, an effective bacteria killer.
A.making up | B.making into | C.made of | D.made from |
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