The number of _________(only child) in China is increasing in China. 在线等哦
问题描述：
The number of _________(only child) in China is increasing in China. 在线等哦
答
only child是独生子女的意思，这里要填它的复数形式，应该是only children
答
children，因为child是单数，children是复数啦
答
children
如还有不懂的,还可以继续追问哦\(^o^)/~