“American will fulfill the commitments that we have made: cutting our emission in the _________ of 17 percent by 2020”, said Obama.
| A．form | B．range | C．state | D．need |
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“American will fulfill the commitments that we have made: cutting our emission in the _________ of 17 percent by 2020”, said Obama.
| A．form | B．range | C．state | D．need |
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