12 David won’t come to my wedding party I send him an invitation. (A)when (B)unless (C)as

問題詳情

12 David won’t come to my wedding party    I send him an invitation.
(A)when
(B)unless
(C)as
(D)after

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)