问题
选择题
--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.
A．when
B．why
C．what
D．that
答案
答案：A
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--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.
A．when
B．why
C．what
D．that
答案：A