問題詳情

12. At the beginning of class, the noise of desks _______could be heard outside the classroom.
(A)opened and closed
(B)to be opened and closed
(C)beingopenedandclosed
(D)to open and close

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)