What do you think that noise was? It a dog. [ ] A．might have been B．must be C．ma
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What do you think that noise was? It ________a dog.
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A．might have been B．must be C．may D．might be试题答案
答案：A
What do you think that noise was? It ________a dog.
[]
A．might have been B．must be C．may D．might be答案：A