we ----- this experiment by the time he comes

we ----- this experiment by the time he comes By the time he comes,we __half of it. This is the f____ time he comes to this town. 翻译By the time he comes,I'll have left.( By the time he came, ":we decide the question by experiment" By the time that we got there,he was out. At this time ,the owner comes ( ) 填空He (work) on this novel for a very long time.By the time h by the time this talk is over,we( )a lot about the earth. By the time this talk is over, we are learning a lot of abou _____ this time next week we'll be in the new york A by B on by this time tomorrow we have finished the work.这句话哪错了?怎么改?