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They _________ the plne, or perhps they hve been prevented from coming for some reson.cn h

veThey _________ the plne, or perhps they hve been prevented from coming for some reson.cn hve missed B．cn hve lost C．my hve missed D．my hve lostA．can have missedB．can have lostC．may have misseD．may have lost

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