When dealing with students, teachers are supposed to adopt ______ and caring approaches, as they are unique young individuals of different personalities. 

Shanghai Expo has been building an Expo Village for the participants, but other choices will also be ____ if the Expo Village does not satisfy their needs．

As a _______ rule, most flowers appear in spring.

You should take ____________ measures to improve your working conditions．

  After a long time for many years, he is now _____.