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- The accident might not have happened had we been more careful. - But we at tha

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- The accident might not have happened had we been more careful. - But we at tha

— The accident might not have happened had we been more careful.

— But we ______ at that time.

A．weren’t    B．didn’t       C．hadn’t      D．don’t

试题答案

A

标签：hadhappenedbeenwehave

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