12.He is always ________and never feels tired.
________of the land in that area________covered with trees and grass.
It was on a cold winter evening_______ his father left home and was never back.
Is this school ________ my father studied in when he was a child.
Hearing the old man’s report, the officer _______ from his seat and said something must be done to ________ people’s living standards.
Instead of ________sights, Edison would spend the time ________in the public library.