Complete the text with the words from the box: become, enjoyed, lesson, questions, tradition, hard, marks.

Two times a year we have Self-Regulation Day at school. On this day, the senior students become the teachers of the younger students. This tradition started 10 years ago. Last year two students from grade 9, Anton and Dasha, gave a History lesson to Grade 5. It was an unusual lesson. The younger students travelled in a time machine. During the trip they worked hard. They read, asked and answered questions, drew pictures and did puzzles. All the students got good marks. Anton and Dasha were happy, too. They enjoyed teaching.