– Mr Green has one-year-old son doesn’t he?–Yes and he also has eight-year-old daughter.

问题补充：

– Mr Green has one-year-old son, doesn’t he?

–Yes, and he also has eight-year-old daughter.

A. a, a

B. an, a

C. a, an

D. an, an

答案：

A. a, a

B. an, a

(答案→)C. a, an

D. an, an

解析：句意：——格林先生有一个一岁大的儿子，不是吗？——你说的对，他还有一个八岁大的女儿。 数词one和 eight都是原因因素开头的单词，作定语修饰名词时，表示单数时用不定冠词an来修饰。故选C。