This couple has two daughters,() of whom is working in the U.S..
A . the younger
B . the youngest
C . a younger
D . the young
出自:伊犁师范-英语语法

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块