问题补充：
--- How many concerts up to now?
--- About 25. Last night we our biggest one.
A. did you play, have had
B. have you played, had
C. had you played, have had
D. do you play, have had
答案：
A. did you play, have had
(答案→)B. have you played, had
C. had you played, have had
D. do you play, have had
解析：考查时态。本题第一句中的时间状语是up to now直到现在，与现在完成时使用；第二句中的时间状语是last night这是一个很典型的过去时的时间状语。句意：—到现在为止你举行了多少次演奏会？—大约25次，昨天晚上我们举行了最大的一次。故B正确。
