This passage discusses the evolving definition of family and the dynamics of marriage and household responsibilities. Below are the answers with brief explanations for each:

1. (1) A - which
- "which" is used to introduce the definition.

2. (2) B - need
- "need" fits the context as it indicates a necessity within families.

3. (3) C - hope
- "hope" refers to the aspirations families have regarding their members.

4. (4) D - combine
- "combine" refers to the collaboration among family members.

5. (5) C - expect
- "expect" is appropriate here to denote what children and spouses anticipate from each other.

6. (6) B - need
- "need" is relevant as it indicates the requirements of modern families.

7. (7) D - will
- "will" signifies future actions, appropriate for discussing responsibilities.

8. (8) C - house
- "house" relates to the shared living space of family members.

9. (9) D - combine
- "combine" reflects the idea of merging responsibilities among members.

10. (10) B - need
- "need" suggests the evolving expectations about marriage and partnerships.

Please let me know if you need further interpretation or specifics!