問題詳情

4. This mother looks so young that it is hard to imagine she has a _______ son.
(A)three-year-old
(B)three-years-old
(C)three years old
(D)third-year-old

參考答案

答案：A
難度：適中0.6875
統計：A(11),B(5),C(0),D(0),E(0)