An unhappy childhood may have some negative effects on a person’s characters; however, they are not always_________,

From the ___ expression on her face, we knew that the problem was ____.

His father was really a ______ person. Once he made up his mind, nothing could change it.

John was so sleepy that he could hardly keep his eyes ______.

Bob’s salary is three times ______, so John admires Bob very much.