A. idle B. eff icient C. collaborative D. access E. effective F. lease G. spent H. witnessed I. sharing J. conforms K. decade L. meets M. streamline N. excess O. useless The reason why the value of the assets we possess depreciates quickly is that we already have the ownership and we may lose interest in them. Under this circumstance, these items can be used for  1C. collaborative   consumption. The success of Netf lix, Zipcar and CouchSurf ing shows us that  2 I. sharing  has already transformed into rental businesses, which will thrive in the following  3K. decade . To some extent, this is a good way to share possessions with other people. In some countries, rental business is still a new trend which needs to be further developed.   Considering the growth of population, collaborative consumption  4 J. conforms to the trend that swapping, bartering and other similar businesses will explode one day. Netjets and Freecycle are both designed to reduce the  5A. idle