Our class teacher turned away ____ I could give my reason for not_英语解答

Our class teacher turned away ____ I could give my reason for not having finished my work.
A.before B.as C.when D.after
为什么选A?

人气：316 ℃　时间：2020-02-05 08:10:36

解答

句子想表达的意思就是：在我想说明理由为什么没有完成作业之前,老师就扭头走了（before 在...之前）
after 肯定不对了翻译不通