Here are suitable words to fill in the blanks:

1. (3) **honor**
2. (4) **ancestor**

The complete text would read:

"In everyday life, people must not forget that what they enjoy and how they feel is the same for their dead relatives. On the anniversary of an ancestor's death, descendants and relatives unite and prepare a feast to **honor** the dead people and to ask for health and happiness for themselves. From generation to generation, **ancestor** worshiping customs have been..."