Modern life is a lot les s to the advantage of friendships and neighborliness than it used to be. The average American moves every five years. People drive straight into their garages, hire lawn services, hang out in their backyards instead of their front porches (前走廊). These days, neighbors don't even know each other's names. 
Good neighbors and good friends are a lot like electricity or running water: We don't know how much we depend on them until we don't have them. In fact, the authors of a recent book, Refrigerator Rights, claim that refrigerators are signs of close relationships--after all, you wouldn't snatch a drumstick(鸡腿) from the refrigerator of a stranger.
The surprising thing is that all it takes to strengthen your relationship with friends and neighbors is respect for their feelings, concern for their property, and a helping hand when it's needed. Here's how to develop your relationships with two types of vitally important people in your life. 
_________________. A true friend doesn't flee when changes occur. The sign of a good friend is one who stays true through it all--marriage, parenthood, new jobs, new homes, the losses. Just because situations change doesn't mean the person has to.
Friendships fade away if there isn't an balance between the give and the take. So make sure you aren't being a burden to your friends. Be sensitive to how much your friend can and can't offer you--be it time, energy, or help -- and don't step over the line. Meanwhile, friendships that drain(耗尽) you will not last. If a friendship is out of balance in this way, you'll need to talk the situation through.
1. Which sentence in the passage is the closest in meaning to the following one?
A true friend will stay the same even when the situations change. 
2. Fill in the blank in Paragraph 4 with a proper sentence. (Within 10 words)
3. What advice is given in the last paragraph? (Within 10 words)
4. What do you think the author will go on talking about if the passage continues?(Within 10 words)
5. Translate the underlined sentence in the last paragraph into Chinese．