6 Complete the text with the past simple affirmative, negative or question forms of the verbs in brackets. Louis Pasteur 1822-1895
As a young man, Pasteur a studied
at the École Normale in Paris. Then at the age of just 32,
he b (become)
a professor at the University of Lille. In 1856, Pasteur c (receive)
a visit from a man called Bigo who d (own)
a factory that
e (make)
alcohol from sugar beet. He f (have)
a question for
Pasteur: why g (the alcohol / turn/ to acid?)
? When this
h (happen)
they i (not can)
use it and ] (throw)
it away. Bigo k (ask)
Pasteur to find out the reason for this.
At first, Pasteur ! (not know)
but when he m (examine)
the alcohol under a microscope, he n (find)
thousands of tiny micro-organisms. He o (believe).
that they
p (cause)
the problem. q (milk, wine and vinegar / behave /
in the same way?)
2
Other scientists r (disagree)
with him, and newspapers
s (make)
fun of him. However, Pasteur t (continue)
with his work, he u (invent)
methods of testing his theory and v (prove)
that he was right. Later he w (work)
together with two
doctors and x (develop)
vaccines for diseases such as

As a young man, Pasteur studied at the École Normale in Paris. Then at the age of just 32, he became a professor at the University of Lille. In 1856, Pasteur received a visit from a man called Bigo who owned a factory that made alcohol from sugar beet. He had a question for Pasteur: why did the alcohol turn to acid? When this happened, they couldn't use it and they threw it away. Bigo asked Pasteur to find out the reason for this.

At first, Pasteur didn't know, but when he examined the alcohol under a microscope, he found thousands of tiny micro-organisms. He believed that they caused the problem. Did milk, wine, and vinegar behave in the same way?

Other scientists disagreed with him, and newspapers made fun of him. However, Pasteur continued with his work, he invented methods of testing his theory and he proved that he was right. Later, he worked together with two doctors and developed vaccines for diseases such as [the text cuts off here].

To summarize:

- Louis Pasteur studied at the École Normale in Paris.
- At the age of 32, he became a professor at the University of Lille.
- He received a visit from a man named Bigo who owned a factory that made alcohol from sugar beet.
- Bigo wanted to know why the alcohol turned to acid.
- Pasteur examined the alcohol under a microscope and found micro-organisms.
- He believed that these micro-organisms caused the problem.
- Other scientists disagreed with Pasteur and newspapers made fun of him.
- Despite this, Pasteur continued his work, invented testing methods, and proved his theory.
- He later worked with two doctors and developed vaccines for diseases.

Please let me know if you have any further questions or if there is anything else I can assist you with!