可以说
1.Is the only child more advantageous?(advantageous 是形容词 可以用be 动词)
2.Did the only child have more advantages?(advantages 是可数名词 可以说have)
可以说
1.Is the only child more advantageous?(advantageous 是形容词 可以用be 动词)
2.Did the only child have more advantages?(advantages 是可数名词 可以说have)