Mr. Chen was puzzled（闲惑的）and a little suspicious（怀疑的）. He sat in the office and studied a letter apparently（看似）from Mrs. Wang, the mother of one of the pupils in his class. There was something about it which worried him.

    "I don't understand," he said to himself. He shook his head as he circled four mistakes in the letter. "Mrs. Wang is an educated woman. She wouldn't make mistakes like these even if she did write the letter in a hurry. "Mr. Chen took out his class register(名册)and said to himself, "Yesterday was Thursday. Let me see. Ah, yes. I thought so. David was absent on Thursday last week and the week before. Hm. Why is he so often absent on Thursdays? Was he really ill yesterday? Could it be a coincidence(巧合)?”

    Mr. Chen stared at the register as if the answers to his questions were hidden in it somewhere. Then he took out a copy of the timetable(课程表)for his class.

    "I wonder." he told to himself. "I wonder if his absence has anything to do with one of these lessons."

    Mr. Chen looked at the subjects for Thursday: Mathematics, English, P. E. He thought about P. E. He knew that the pupils had P. E. twice a week: once on Monday, when they usually played games on the school field, and once on Thursday, when they did exercises in the gym.

    Mr. Chen glanced round the office to find Mr. Long, the rather strict P. E. teacher, but he was not there.

    "I'd better have a chat with Long and David, "Mr. Chen thought.

The bell rang. "I can't do anything right now," Mr. Chen thought. "It's time to go to Class 2. I'll do it later on."

    Mr. Chen picked up his books and walked off to teach Class 2.

Later, on Friday, Mr. Chen spoke to Mr. Long, the P. E. teacher. Mr. Long agreed that it seemed strange for David to be absent so often on gym days. They thought about it for a while.

    "David is a good athlete(运动员)," Mr. Long finally said, "but he's afraid of heights. I was hard on him once because he wouldn't climb more than a couple of meters up the rope. Do you think that's why he's been absent recently?"

    "Yes, I think so," Mr. Chen said. "I'm going to talk to him this afternoon before he goes home."

    "Well, I've got a suggestion to make," said Mr. Long. "If he's scared of heights, he'd better come and see me after school. Quite a few people suffer from (遭受) vertigo. I'll be glad to help him."

    “That's very kind of you," said Mr. Chen. "I'll get him to come and see you on Monday or Tuesday."

Sometimes I really want to know if （是否） there is love between my parents. Every day they are very busy making money for our life. One day, my mother was sewing a quilt （缝被子）. "Mum, is there 1 between you and dad?" I asked. 

With surprise in 2 eyes, my mum stopped her work for a moment. Then she said, "Susan, look at this thread （线）. You can't see it easily, 3 it's really there. It makes the quilt strong. If life is a quilt, love should be a thread. Love is inside."

The next spring, my father 4 ill. After they were back from hospital, my mother helped my father walk 5 the country road every day. They were kind and happy. 

After two months, my father still couldn't 6 . "Dad, how are you feeling now?" I asked him one day. "Susan, don't 7 me," he said, "I just like walking with your mum. I like this kind of life." 8 his eyes, I knew he loves my mother 9 . 

Now I know that love is just a thread in the quilt of our life. Love is inside. It makes life strong and 10 .

Travelling is not always happy, at least for the buddies in the movie Green Book. The popular film won Best Picture at the 91st Academy Awards on Feb. 25. 

The movie was adapted from the true story of a road trip through the southern US in the early 1960s. In the film, the black pianist Don Shirley hires Italian- American Tony Vallelonga to drive him to performances, but they face problems because of Shirley's skin colour. These problems lead them to form a special friendship. 

"There's something so deeply right about this movie, so true to the time," wrote US film critic Mick LaSalle. The time LaSalle is talking about was between late 1870s and 1960s, a very different period in US history. Many parts of the country had Jim Crow Laws (《吉姆·克劳法》) , which allowed racial segregation (种族隔离) . These laws made life and travel ____ for African- Americans. They couldn't use certain hotels, restaurants, or even gas stations. They had to be indoors after sunset or they might be put into prison. Even black celebrities (名人) had to follow the laws. 

But in 1936, a black mail carrier named Victor H. Green had an idea. He made a list of friendly businesses in New York City. He published the list as a small book with a green cover. The Green Book helped African- Americans travel more safely. Then, in 1964, Jim Crow Lawswent away. The book went away, too. 

Today many US people still remember the time of Jim Crow. But they probably don't know about the Green Book. It's a forgotten part of the story. Thanks to this movie, maybe people can remember it again.