1. (2021六上·北京期中) 阅读短文，判断正误。

One day after school the teacher said to his students, "Tomorrow morning if anyone of you can answer my first question(问题), he or she can go home early. "

The next day, when the teacher came into the classroom, he found the blackboard very dirty(脏的). He was very angry and asked," Who did it? Please stand up!" "It's me," said Jim, "Now, I can go home. Goodbye, sir!"

1. （1） Jim was the teacher's student.
3. （2） The teacher made the blackboard dirty.
5. （3） The teacher asked the students to go home.
7. （4） The teacher was very angry because the blackboard was very dirty.
9. （5） Jim was a clever boy.