1. (2021九上·弥勒期中) 从题中所给的A、B、C、D四个选项中选择能填入空白处的正确答案。

Mr. Smith is old. He has taught math in a middle school1thirty years ago. He works hard and always comes to his office on time. He hopes his students will be honest and he is2with them. Some of his students have become famous person, but they still3him and often write to him.

This term he begin to teach Grade 1. Some of the new students were told about him, but4didn't know about him. On the first day of school he told the students how to be an honest person.

He gave them some5and said, “I don't like telling lies.” Before the class was6, he told his students to finish Exercise 6 in Lesson 1 after class.

The next morning Mr. Smith came into the classroom and asked, “7has finished Exercise 6?” A few students8their hands. He shook his head and said, “open your workbooks and see9there's Exercise 6 in Lesson 1.”

The students had a look at their workbooks and their10turned red at once.