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Bob would have helped us yesterday, but he- A.was busyB.is busyC.had been busy.

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Bob would have helped us yesterday, but he- A.was busyB.is busyC.had been busy.

Bob would have helped us yesterday, but he-_______

A.was busyB.is busyC.had been busy. D.will be busy

试题答案

A

解析试题