Once there was a king who told some of his people to dig a pond (池子).The king then told his people that one person   15  each family had to bring a glass of milk during the night and put it into the pond. So, by the morning, the pond should be   16 of milk.
After   17  the order, everyone went home. As one man prepared his milk, he thought that since everyone was bringing milk, he would just   18  a glass of water and put that into the pond instead.   19  it was dark at night, no one would notice it, so he quickly went and put the water into the pond and  20  home.
In the morning, the king went to visit the pond. To his surprise, the pond was only filled with water! What happened? Yes! Everyone had the same idea   21  that man. They all thought, “I don’t have to waste my milk. Someone else will do it.”
Dear friends, when you plan to help poor people or people in trouble, do not think that   22  will take care of it.  23 , it starts with you. If you don’t do it, no one else will, so change yourself and make a   24  .

This is an online discussion group where people can post(发布) comments about a topic.
Read the post from the travel forum(论坛).

I forget to bring a pen．Would you lend me ____?

       A．one    B．that                   C．it            D．this

—Dad, do I need to bring a raincoat with me ?

—I’m afraid you           .

A. will have to B. needn’t                  C. Sure, I’d love         D. No, thanks