_____ his homework, he went out to play.
A. Having done B. Done
C. He has done D. He had done
A
解析:
having done是现在分词的完成式,表示动作完成。
_____ his homework, he went out to play.
A. Having done B. Done
C. He has done D. He had done
A
having done是现在分词的完成式,表示动作完成。