My dog ate it,then my science project ate my dog.
It was so perfect,I'm having it framed.
I was afraid I'd lose it,so I mailed it to you.
The science teacher didn't have any paper, so I donated my homework so hecould demonstate the effects of hydrochloric acid on paper.
Teacher's excuse-I am sorry your exams are not all graded. the cat got jealous as I was marking instead of paying attention to him. After I went to bed,he attacked the test papers.
There weren't any commercials during the TV show I was watching.