This couple has two daughters, （） of whom is working in the U. S.A.the younger
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答案：A难度：1知识点：词汇与结构部分\辅导书\书A\结构A
A.the younger
B.the youngest
C.a younger
D.the young
正确答案：A
解析:词汇与结构部分\辅导书\书A\结构A