题目内容：

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   1.  he came to the main road, looked to both w   2.  to see that nothing was coming, and then drove across without s 3.  completely.

At once he heard a police whistle（哨声）, so he d   4.  his car to the side of the road and stopped. A policeman walked over to him with a notebook and a p   5.  in his hand and said, “You didn’t stop at the crossing.”

“But the sign there doesn’t say ‘Stop’,” a   6.  Mr. Williams. “It just says ‘Slow’, and I did go slow.”

The policeman looked a  7. him, and a look of surprise came over his f   8.   . Then he p   9.   his notebook and pencil away, scratched（搔）his head and said, “Well, sorry! I am in the w   10.  street!”