29．Do you have any idea ________ is actually going on in the classroom?(A)that(B)what(C)as(D)which

問題詳情

29．Do you have any idea ________ is actually going on in the classroom?
(A)that
(B)what
(C)as
(D)which

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