--- I let my secretary call you several times. Do you know that?
---- I _______ in a meeting. I’m sorry.
| A．had been | B．was | C．am | D．have been |
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--- I let my secretary call you several times. Do you know that?
---- I _______ in a meeting. I’m sorry.
| A．had been | B．was | C．am | D．have been |
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