根据材料内容，从下面五个选项中选出能填入文中空缺的最佳选项，使短文意思通顺，内容完整，并将其标号填写在下面题号后的横线上。

      Everyone needs friends. But how do you find real friendship and keep it?

      The American writer Sally Seamans tells young students some smart ways to find friends. Sally says founding friendship is just like planting a tree. ____ 

      First, you should choose a friend. What makes a good friend? It is not because a person has money or good looks. ____ For example, if you have a bad day, a good friend could listen to your complaints (抱怨) and do his or her best to help you. ____ You should make each other happy and share your lives.

       But things cannot always be happy. Even the best friends have fights. ____ You have to talk to him or her. When there is no one around, have a good talk. If he or she doesn't want to talk, you can write a letter.

       There are three steps to be friends again:

       Tell him or her how you are feeling. ____ Remember that friendship is one of the most important things in your life.

过去，山区公路多为“之”字型盘山公路。现在，兴建高速公路则是逢山开道，遇沟建桥，尽量取最短距离。据此完成下列各题。