We often ___ a particular color with a piece of music, a book, a play or a person.
A. refer
B. know
C. associate
D. like
___ good health, I hope to finish the work this year.
We should remember ___ people are still very poor.
A. millions of
B. million of
C. millons
D. million
When she was in _________ , she got married.
A. her twentieth
B. her twenties
C. the twenties
D. the twentieth