I met Ann (_)accident in the street yesterday A in B for C by D.at

I met Ann (_)accident in the street yesterday A in B for C by D.at (1/2)Before,I talk with（_ ）scientist ,I had never met [ _] clever perso 请说明为什么英语题要选每一个正确答案的理由：（1）I met a friend of ()on() way home. A.mine;my B.my;the C.mine;a D.mine;the(2)It was a bad acciden---they're lucky to be()A.dead B.killed C.alive D.hurt Ann：Hello,Tom!Tom：Hello,Ann!Ann：Tom,I left（遗忘） some things at home.But I need them.Tom:_______________?Ann：I'm at school._______________?Tom：Yes,I can._______________?Ann：I need my notebook,keys,watch and pen.Tom：Your notebook?_ I met a girl who ____ you Oh.that may be my twin sister Ann.A.likes B.likedC.is like D.look like为什么 I met a girl who____ you.---Oh,that maybe my twin sister Ann.A.likes B.likedC.is like D.look like 将错误句子改正确1.I met Ann in Friday evening.2.The exhibition was at Jume.3.Where were you on last Monday? 填介词或副词 _ my way home I met my friends yesterday.Let's meet _ the entrance _ the cinema tonight. __When I near the first place we met,I could see that always、_沉默,仅仅是无力诉说而已 Ann met an old woman ( )her wayAnn met an old woman ( )her way tO the cinema, 1、you'll be _(hurt) if you jump down2、i'm happy that ann is getting _(well) and she already can speak 英文句子I am Ann Yesterday I met some job-hunters,several of _ were university students.A.who B.them C.which D.whom “I met her yesterday”he said to me.改为间接引语He told me that _ _ her the day before Ann I met them both.=I met both of them. I ___ Mary in the street yesterday ,we ___ each other since I left school.A.met;didn't see B.had met;hadn't seen C.met;haven't seen D.met;hadn't seen答案上说是C,我觉得应该是D啊?谁能给我讲一下?还有一题：They are sitting _ _ I was walking in the street,I met an old friend of mine.A.UntilB.AfterC.ThoughD.As请说出原因