Speech is the fastest method of __________（交流，沟通）between people.
The tree grew on the __________(边缘）of the cliff.
I believe he is __________(关心）about all those matters you mention.
She __________ (宣称）that she didn't want to see him again.
Even if you can't be the next great scientist, it's worth remembering some of the g __________ that made Einstein great.
His actions d __________ him (to be) an honest man.