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

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

-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

试题答案

答案:B