Speaking of what sort of smartness is most desirable in human __________，a friend of mine told me a story.

When Jane began to take swimming lessons, her main ____ was the fear of water．

My early_______ at learning playing the piano was a failure although I took a fancy to it.

Gerneally speaking, it is difficult to breathe at a high       of Tibet (西藏).

Being able to speak another language fluently is a great          when you are looking for a job.