Mr. Williams, who was always a very careful driver, was driving home from work one evening when he came to a crossroads. It had a “Slow” sign, so he slowed down w    he came to the main road, looked to both w    to see that nothing was coming, and then drove across without s  completely.
At once he heard a police whistle（哨声）, so he d    his car to the side of the road and stopped. A policeman walked over to him with a notebook and a p    in his hand and said, “You didn’t stop at the crossing.”
“But the sign there doesn’t say ‘Stop’,” a    Mr. Williams. “It just says ‘Slow’, and I did go slow.”
The policeman looked a  him, and a look of surprise came over his f    . Then he p     his notebook and pencil away, scratched（搔）his head and said, “Well, sorry! I am in the w    street!”