Question

His daughter is _________ girl

1. A.
   a eight-year-old
2. B.
   an eight-year-old
3. C.
   an eight-years-old
4. D.
   a eight years old

Answer 1

B
考查复合名词。这里an eight-year-old 作定语，故用连接符号形式，故选B。