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A high school history teacher once told us, 'if you make one close friend in school, you will be most fortunate. A true friend is someone who stays with you for life.' Experience teaches that he was right. Good friendship is just not easily 21 . It is possible that we simply do not stay in one place long enough for 22 friendship to developed. However, there can be 23 disagreement on the need for each of us to think carefully about the kind of friendship we want. To most of us, friendships are considered very important, but we need to have clear ideas in our 24 the kinds of friendship we want. Are they to be close or 25 at arm's length? Do we want to 26 ourselves or do we want to walk on the surface? For some people, many friendships on the surface are 27 enough—and that's right. But at some point we need to 28 that our expectations are the same as our friends' expectations. The sharing of 29 experience including our tears as well as our dark dreams is the surest way to deepen friendships. But it must be undertaken 30 and carried on only if there are 31 of interest and action in return. What are some of the 32 of friendship? The greatest is the attraction to expect too much too soon. Deep relationships 33 time. Another 'major difficulty' is the selfishness to think one 'possesses' the other, including his time and attention. So, friendships 34 actions in return, in other words, you must give as much as you take. Finally there is a question of taking care of. Unless you spend 35 time together, talking on the phone, writing letters doing things together, friend-ships will die away.
【答案解析】根据上文的“Another' major difficulty' is the selfishness to think one' possesses' the other, including his time and attention.”可知，朋友给了你时间和精力，你也不能自私，所以此处指的是友谊需要回报，故选A。