题文
At the meeting, Mr Li came up with a proposal _______the construction of the new airport.
| A．concerned |
| B．to concern |
| C．concerning |
| D．being concerned |
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At the meeting, Mr Li came up with a proposal _______the construction of the new airport.
| A．concerned |
| B．to concern |
| C．concerning |
| D．being concerned |
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