Mary began to learn English by herself in ( ) A,Mary began to lea_英语解答

Mary began to learn English by herself in ( ) A,
Mary began to learn English by herself in ( ) A,the fifty B,the fifties C,her fifty D,her fifties 求原因

人气：209 ℃　时间：2019-10-11 20:26:02

解答

D
在某人的某个年龄段,常常用整十数的复数形式.her fifties