It was very cold in
the morning of a Monday
71.
A
chemical teacher was standing by the desk,
72.
explaining
the exercises to the students had done 73.
at home
the day before. A few minutes past. He 74.
was
shaking all over and his nose was blue with 75.
cold.
All of a sudden he noticed what one of the 76.
window
facing the north was open. And through 77.
which
the cold wind was then blowing directly 78.
to him.
He was the bit angry, but he asked in 79.
a kind
voice: "Who left the window opened?"
80.
