你好,很高兴能够在这里回答你的问题,这道题的正确答案应该为:
B
when ____completed__(competion), --------分词结构
==when it is completed / has been copleted --------时间状语从句
你好,很高兴能够在这里回答你的问题,这道题的正确答案应该为:
B
when ____completed__(competion), --------分词结构
==when it is completed / has been copleted --------时间状语从句