11. ___________ on and on, the speaker did not seem to notice that most students dozed off.(A) Drone

問題詳情

11. ___________ on and on, the speaker did not seem to notice that most students dozed off.
(A) Droned
(B) To drone
(C) Droning
(D) Being droned

答案：C
難度：簡單0.703704
統計：A(1),B(2),C(19),D(2),E(0)