問題詳情

23. Naming their twin babies ____ them for weeks, but nowthey know ____ to do.
(A) have troubled; how
(B) are troubling; how
(C) has troubled; what
(D) is troubling; what

參考答案

答案：C
難度：適中0.5
統計：A(0),B(1),C(1),D(0),E(0)