Mary*s.brother is a doctor.He is four years.than her.

问题描述:

Mary*s.brother is a doctor.He is four years.than her.
A.older elder .B.elder elder C.elder.older D.older older

C详细解释一下吧拜托这句话的意思是玛丽的哥哥是个个医生,他比玛丽大四岁。如果形容的是哥哥或是姐姐,用elder,岁数的大小用old。