题文
If we___adequate preparations,the conference wouldn’t have been so successful
| A．haven’t offer |
| B．wouldn’t offer |
| C．hasn’t offered |
| D．hadn’t offered |
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If we___adequate preparations,the conference wouldn’t have been so successful
| A．haven’t offer |
| B．wouldn’t offer |
| C．hasn’t offered |
| D．hadn’t offered |
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