問題詳情

3.When we ________ biking, it started to rain.
(A) about to going 
(B) were about to go 
(C) about to go 
(D) are about to going

參考答案

答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)