To       good relationships with your teachers and classmates, you should learn to be on good terms with them.

The magazine is a(n) ______ number. You can take it out of the reading room.  

(2013·福州市高三一模)Our government's plan to fight against air pollution will focus on ________ information and handling PM2.5.

I wish to thank Professor Smith，without ________ help I would never have got this far.(2012·天津)

Although at times learning to play the piano Was tiring for me，it was well worth he_______.