(2014·湖北重点中学联考)His contribution to the boy’s welfare was to________him for the world in which he would live.

  Jacky Chan is________ to turn up at the party for charity, since he is always enthusiastic about such things.

Sometimes the ______ between the reality and the dream is so great that it produces disappointment. 

The government decided to tear down the old bridge, which was not strong enough to allow the ___ of heavy vehicles (车辆).

 Two years ago, she bought an expensive mountain bike and then she persuaded me to buy _______.