—I rang you at about nine，but there was

问题选择题

—I rang you at about nine，but there was no reply．

—Oh，that was probably I was seeing the doctor．

A．why

B．when

C．what

D．that

答案

答案：B

题目分析：句意：--昨晚我打电话给你,但是没有人接电话。--哦，那很有可能我正在看医生的时间。依据上下文was后应是表时间的表语从句，只能用when来引导。选B。

考点: 考查表语从句关系词的用法。