we ----- this experiment by the time he comesA.will finishB.will have finishedC.had finishedD.are to finish为什么选B不选其他的,

From this passage we . 一篇英语记叙文,初四教师请评个分（15满分）AN UNFORGETTABLE THINGI've been in this middle school for 4 years.And now,it's time to leave.There were many things which happened between teachers and me.But I would never forget the experi 我的一点英语语法感言,请进来点评我相信没有绝对perfect的语法书.我用的是《无敌英语语法-全范围》.在倒装和强调章节里面.有一小节是宾语和表语的前置.Eg:This he was unable to do,but in his experi This summer we graduated together We live together this life. This is house where we We'll stay forever this This is our____(we)restaurant From this passage we know Can we drop this masquerade This is what we must 翻译：THIS IS IRAQ! THIS IS WHERE WE FIGHT AND THIS IS WHERE WE DIE! we have to be careful how we do this这句中 how we do this是什么成分? we'd like this yellow coat 对this yellow coat we have eleven subjects this term对this term 提问 We will pass on this opportunity to quote this RFQ. When we were young.we dream this day.Wrestlemania!) this is our school where we learn if we're