The party last night was great success. We sang and danced until it came to end at 12.
A. the; the
B. /; an
C. a; an
D. a; the
网友回答
A. the; the
B. /; an
(答案→)C. a; an
D. a; the
解析：考查冠词的用法。success为不可数名词，前加不定冠词a，指抽象名词具体化，意为成功的人或事，固定短语： e to an end结束 ，所以选C。