问题补充：
– 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
答案：
A. have had; is running
B. had; is running
C. have; has been run
D. have had; has been run
解析：本题考查时态的用法。up till now =so far 到目前为止，是现在完成时的标志，根据语境可知我们的时间正在丧失殆尽，应用现在进行时。
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