問題詳情

15.We________a red ball for a blue one to see if the baby would notice the difference.
(A)substituted
(B) disstituted
(C). constituted
(D). instituted)

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)