—I rang you at about nine，but there was no reply．—Oh，that was probably I w

题干

—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

上一题下一题 0.64难度单项选择更新时间:2013-10-15 04:37:28

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