30. The mayor of Beijing says that all construction work for the Beijing Olympics ______by the end of this month.
| A．has been completed | B．has completed |
| C．will have completed | D．will have been completed. |
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30. The mayor of Beijing says that all construction work for the Beijing Olympics ______by the end of this month.
| A．has been completed | B．has completed |
| C．will have completed | D．will have been completed. |
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