This week I went to school. I saw a lot of teachers. such as Chinese teacher, English teacher, math teacher. And I thought the Chinese and English were easy. But math was quite difficult, but I still loved it. Every day, We did math homework after eating lunch. Afternoon was a time for me to clean the classroom. There were three studants with me. two cleaned the desks and chairs. Another student and I cleaned the floor. When I thought the floor was clean, I came back home. But next day, the teacher cried:"Who cleaned the floor of classroom yesterday? It is so dirty!" And I sighed:"was me." The teacher was really angry and I was so sad, I cleaned it very hard!