Kwanzaa is a _________ festival_________ the culture and history of African Americans.

A. seven-days ; celebrating          B. seven-day; celebrated 

C. seven-day’s ; to celebrate           D. seven-day ; celebrating

— Do you know something about Kwanzaa?

    — It is _____festival celebrating the culture and history of African Americans.

A．a seven-day      B．a seven-days     C．a seven day      D．seven days