The uniform makes us look like a bunch of clones, especially we are doing morning exercis

发布时间：2020-08-17 13:51:43

The uniform makes us look like a bunch of clones, especially      we are doing morning exercise in the playground. 
A. since
B. which
C. As
D. when

网友回答

A. since
B. which
C. As
(答案→)D. when
解析：选项C应表示“一边……一边”两个动作同时进行，该处表示时间“当我们做早操时”，故选D项。
以上问题属网友观点，不代表本站立场，仅供参考！