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
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— 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：B