—Coach，can I continue with the training?
—Sorry，you can’t________you haven’t recovered from the knee injury.(2012·重庆，30)
| A．until | B．before |
| C．as | D．unless |
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—Coach，can I continue with the training?
—Sorry，you can’t________you haven’t recovered from the knee injury.(2012·重庆，30)
| A．until | B．before |
| C．as | D．unless |
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