--Sandy,Icalledyouat9:00lastnight,butnobodyansweredthe...
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问题详情：
--Sandy, I called you at 9:00 last night, but nobody answered the phone.
--I am sorry. We ________ a birthday party for Jerry.
A. had B. are having C. were having D. have had
【回答】
C
知识点：动词时态
题型：选择题
