i had just gotup and was about to cook my breakfast —the telephone rang loudly ,

题目

i had just gotup and was about to cook my breakfast —the telephone rang loudly ,
but it hung up —i could answer it 为什么选择 when,before 求相关知识点

答案

when意思是当...的时候
before意为在...之前
带入原句翻译为：
在我接听电话之前对方就挂电话了