After ________ seemed a hopeless wait, four coalminers trapped in the mine for 125 hours were finally rescued in Heilongjiang Province.
| A．when | B．that |
| C．it | D．what |
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After ________ seemed a hopeless wait, four coalminers trapped in the mine for 125 hours were finally rescued in Heilongjiang Province.
| A．when | B．that |
| C．it | D．what |
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