9 v. to solidify; to become solid; to stabilize; to become stable(A) falter (B) go after (C) progres

問題詳情

9 v. to solidify; to become solid; to stabilize; to become stable
(A) falter
(B) go after
(C) progress
(D) firm

答案：D
難度：適中0.5625
統計：A(3),B(0),C(3),D(9),E(0)