Mr. and Mrs. Green work in the hospital but they have no children. So they belong to .A.

问题补充：

Mr. and Mrs. Green work in the hospital, but they have no children. So they belong to .

A. extended family

B. nuclear family

C. DINK family

D. celibatarianger

答案：

A. extended family

B. nuclear family

(答案→)C. DINK family

D. celibatarianger

解析：格林夫妇都有工作，都有收入，但没有孩子，我们通常在英文中称为丁克家族，DINK family表示此意，故选C。