题目

3.We were just_ calling you up...
3.We were just_ calling you up_you came in.
A.about,when
B.on the point of ,while
C,on the point of ,when
D.on the point of ,as
正确答案是C,我选了D,想问问为什么这样选

提问时间：2020-12-31

答案

答案是C
本题考查固定句型be about to do .when
be on the point of doing ...when
be just doing ...when
had just done...when
表示某人刚要、正要做某事,就在那时突然...,本句型中when是并列连词,相当于at this/ that time
本题意思是：我刚要打电话给你,你正好来了.