When Mary Smith was a student, she always wanted to be a teacher because she liked 1. When she was twenty, she started to 2 in a small school. She was a good teacher, and she laughed a lot with the children 3 her class. They enjoyed 4 teaching.
One day, one of the girls said to her, "Miss Smith, 5 does the hair on a man's head become white before his beard does?"
Mary laughed 6 answered, "I don't know, Helen. Do you know?"
"I don't know, Miss Smith," said Helen. "But it happened to my 7. " The other children in the class laughed when they 8 this.
Then a boy said, "I 9, Miss Smith! The hair on a man's head becomes white first because it's sixteen years 10 than his beard. "
