You are really very kind. I’ll never forget the      you have done to me.

The _______ that someday he would succeed cheered him through many disappointments.

Usually a child's behavior is a ________ of his family environment. 

He is an old doctor with a lot of ________. But he has never travelled by air before.Taking a plane was quite ________ experience for him this time.

We can’t afford such an expensive car. You know, our total _____ adds up to no more than $10,000 a year.