Today，__meet two families with only children.
举一反三
- Families _________ one parent has an only child could have two children.
- Now, families where one parent is an only child could have two children.
- In the 1950s, the majority of the American households were __________-- a husband, wife, and two children. A: blended families B: stepfamilies C: single parent families D: nuclear families
- Only two children _______ the earthquake in that village.
- 4-2-1 families are made up of four children, two parents and one grandparent.