Question

Write a correct alternative to fill in the blanks : many years ago pasteur discovered a way of keeping germs out of wine. He__ (found/had found /was finding)that if wine__ (is heated/was heated/had been heated)gently below the boiling point, grams which make wine sour__(kill/are killed/werekilled).

Answer 1

First blank - found
Second blank -was heated
Third blank - were killed

Answer 2

many years ago pasteur discovered a way of keeping germs out of wine . he ( found ) that if wine ( was heated ) gently below the boiling point grems which make wine sour ( were killed ).

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