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, they went home, . A. Their work had been finished; singing and laughing B. The

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, they went home, . A. Their work had been finished; singing and laughing B. The

___ , they went home, ___.
A. Their work had been finished; singing and laughing
B. They had finished their work; sang and laughed
C. Their work finished ; singing and laughing
D. after their work finished; singing and laughing

试题答案

D