My son was a second-grader. He went to school by bus every day. He was the first student on in the morning, as we were farthest from school, and the last student off in the evening. I was a teacher myself and it was a comfort to realize the school staff (职员) were all working as hard as I was to provide a safe learning environment.
One day I came home from work and waited for my son to get home for a long time. Then I called the school. “Perhaps he’s just a bit late,” said the secretary. “I will call the driver to see if those children are home.” A few minutes later, I answered the phone to hear that the other students were home. Then I called his friends’ parents, to see if perhaps he had gotten off at their stop to play. The answers were all “No.”
By that time, it was dark and I was scared. My home was in the mountain areas, and it was said that a wolf had come up somewhere. My husband wasn’t at home, so I forced myself to calm down and decided to go out to look for him. I was about to go out when the telephone rang; it was from the driver. “He’s okay,” I heard. “He was asleep on the seats in the back, under a couple of jackets. Since it’s dark, can he spend the night with my family?”
I was relieved and agreed. Since my son had a great adventure, the school started giving a copy of the list to the driver, so he could check off the children’s names when they got off the bus. I think highly of the school for taking the cautionary (警戒的) step ahead; it is a sign of their concern for students, parents, and staff.
From Paragraph 1 we learn that ________.

A．the author’s son went home by bus every after-noon

B．the author’s son came to school earlier than other students

C．the author’s home was farther than that of any other student

D．the author was a teacher in her son’s primary school

At first the secretary thought ________.

A．the author’s son was still at school

B．the school bus would arrive in a while

C．the author’s son was at his friend’s home

D．there might be something wrong with the school bus

The author’s son probably spent the night _________.

A．in the bus	B．at his own home
C．at the driver’s home	D．in the secretary’s office

The author wrote the text to ________.

A．praise the school for its quick action

B．thank the bus driver for his kindness

C．complain about the secretary of the school

D．show her concern for kids safety