問題詳情

23．Susan decided not to work on the program at home because she didn’t want her parents to know what she __________.
(A)has done
(B)had done
(C)was doing
(D)is doing

參考答案

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