We him on his birthday and held a party to it. A. congratulated; congratulateB. celebrated

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A. congratulated; congratulate
B. celebrated; celebrate
C. celebrated; congratulate
(答案→)D. congratulated; celebrate
解析：考查动词，congratulate祝贺 celebrate庆祝
句意为，我们在他生日的时候祝贺他，并且举行了一个聚会来庆祝他的生日。