Mr. and Mrs. Wilson and their children were going to begin their holiday one day, and they had to be at the airport at eleven forty in the morning. "It'll take us half an hour to get there in the car," Mr. Wilson said, "so we must leave before eleven o'clock. Don't be late."

    At ten minutes to eleven, they were busy doing things, except Mrs. Wilson didn't, she was sitting quietly on a chair in the garden and enjoying the sun.

    Her husband and children were very surprised. Why wasn't she busy, too. Mrs. Wilson answered, "Well, before I went to bed last night, I moved all our clocks and watches ahead twenty minutes. So now we can go to the airport quietly, Don't worry, then."

某化学兴趣小组为测定Fe、Cu、Ag三种金属的活动性顺序，选用下列各组试剂，你认为不可行的是（　　）

要求：在秋风中，树叶和小鸟进行了对话。请你围绕一个主题，把题目补充完整，也来写一段对话，可以是饭桌上的对话、我和爸爸的对话、燕子和小鱼的对话……抓住动作、神态、语言、心理等写具体，写生动。字数250字以上。