完形填空 Donald was not very good at maths. He could not understand the teacher's 1. Even when the teacher explained something again, Donald still could not 2it. “Never mind,” Donald told himself. “I'm quite good at other 3. I cheat (作弊) in the maths exam, then I won't be in4.”
“My deskmate Brian Smith is best at maths,” he thought, “and I'll be able to 5his answers.”
The day of the exam came, and Donald sat 6Brian Smith, who always sat at the front of the 7. Donald carefully copied Brian's answers onto his own exam paper. At the end of the exam, the teacher 8the papers and graded (评分) them.
Then she said, “Well, boys and girls, I've decided to give a9to the student who got the highest grade. It's 10for me to decide whom I will choose, however, because two students, Donald and Brian, got the 11grade.”
“Let them share it.” one of the 12said.
“I've thought about that,” the teacher said, “but I've chosen Brian.”
Donald was 13when he heard this. He stood up and said, “That's not fair.”
“That's 14,” the teacher said. “However, Brian's answer to Question 18 was 'I don't know.' Yours was 15do I.' ”