摘要：-Why didn’t you take part in the meeting yesterday? --I for a long-distance call at that time. A. waited B. was waiting C. has waited D. waiting

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Why didn't you take part in the meeting yesterday?

I ________ for a long distance call at that time.

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A．waited　　B．was waiting　　C．has waited

---Why didn't you take part in the meeting yesterday afternoon?
---Because at that time I ________ for a long distance call.

－Why didn't you take part in the meeting yesterday afternoon?

－Because at that time I ________ for a long distance call.

[　　]

---Why didn't you take part in the meeting yesterday afternoon?---Because at that time I ________ for a long distance call.