This morning,I had an unforgettable English lesson.The bell rang and our history teacher came in.First he said that he was going to ask us some questions,and those who had not been asked questions recently would be asked first.On hearing this,I was very pleased,for I had been asked a question a week before.So I didn’t have to worry about anything.But unluckily,I was asked again.But I couldn’t answer the question.At last with a red face I had to say sorry to the teacher.The teacher didn’t criticize me.How shy I was at that time!After class,I thought and thought and came to realize that I should make good use of time,and never put off what could be done today till tomorrow.