用having been done 造句
题目
用having been done 造句
答案
The experiment having been done,the students left the laboratory.做完这个实验后,学生们就离开了实验室.The business having been promised must be done.答应别人的事一定要做到.John has been aware of having...
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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