問題詳情

21. I find it hard to concentrate on studying with the radio ______.
(A) turning on
(B) on
(C) be turned on
(D) to turn on

參考答案

答案:B
難度:困難0.26506
統計:A(36),B(22),C(14),D(1),E(0)

內容推薦

內容推薦