Complete the text with the Past Simple form of the verbs.

Here is the text with the correct Past Simple forms: My young cousin, Ben, started school last year. There were fifteen children in his class. In the first lesson the teacher read a story. After the lesson, the children wore their coats because it was cold. My cousin walked out of the playground. They thought it was time to go home. He looked for his mum. My aunt was not there, so he sat on the grass and waited for a bus. Luckily he was not home long, and the bus driver took him back to school. That evening his parents asked him: 'How do you know it was time to leave the playground this morning?' 'Your teacher phoned us.'