问题描述：
_-Do you think we should accept that offer?—Yes,we should,for we ___such bad luck up till now,
and time ___-out.
A.have had ,is running B..had ,is running C.have,has been run D.have had ,has been run
and time ___-out.
A.have had ,is running B..had ,is running C.have,has been run D.have had ,has been run
问题解答：
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