The meeting was postponed,which was exactly what we wanted 帮忙分析下这句的语法

1I_____an old friend of mine when I_____in the stree yesterday.A.met was walking B was meeting walkedC.was meeting was walking D met walked2 One day when I_____ the post office,I_____my uncle A .pass say B.was passing sawC.passed saw D.passed was see he was late for the meeting 句子成分? meeting,was,off,put,the组合一句话 he was present the meeting yesterday aftermoonhe was present ________ the meeting yesterday afernoon. post the The woman asked the policeman where___.A.the past office isB.the post office wasC.in the post officeD.was the post office By the time we arrived the meeting was over.翻译 -Excuse me,do you know______? -It's over there in front of the park.A.where is the post officeB.where the post office isC.where was the post officeD.where the post office was求答案、说理由 the meeting ended 2 hours和the meeting was over for 2 hours翻译 when everyone was seated the meeting began.还有seated the meeting Mr.White was absent from the meeting yesterday. He was too happy to say____(something) at the meeting The meeting was said to be a c___ success. the meeting was said to be a c___ success. I firmly believe___he said at the meeting was right. The sports meeting was over on Friday?顺便问一下, The meeting lasted about an hour. 这句话对吗?需要在meeting后加 was吗 the meeting being over,all of us went home. 和when the meeting was over ,~ 为什么用being和was