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。依据上下文was后应是表时间的表语从句，只能用when来引导。
考点: 考查表语从句关系词的用法。