問題詳情
45.Online classes ________ enabling teachers and students to communicate, even when they are across the world from each other.
(A) take care of
(B) make up
(C) make an appointment to
(D) hold the promise of
參考答案
答案：D
難度：困難0.257143
統計：A(0),B(5),C(20),D(9),E(0)