Which jokes have been contracted by you for a year?

I passed the top class when I came back from class and went to the toilet. Suddenly a physics exercise book flew out. Without much thought, I picked it up and threw it back from the window. Then the class burst into laughter. I've never heard such exaggerated laughter in my life. Later, I learned that it was the physics teacher of this class who worked hard to check the physics homework. Then I found that a schoolmaster didn't write his homework. Grabbed the workbook of Xueba, sneered: With your attitude, you must be admitted to 211, unless this workbook can fly back by itself!