This is the _____ piano on which the composer created some of his greatest works.

Attention, please! And keep ________ when I am taking a photograph of you.

More ________ information is needed to help us work out the real situation. 

If you are _______ about Australian cities, just read the book by Dr. Johnson, which introduces them in detail.      

This old man is ____ in the small village, just 2 years younger than Tom’s grandpa.