By the time he ______ ten, he ______ about 3,000 English words.A. had been, had learned B. was, had been C. was, learned D. had been, learned

His brother had already posted by the time he _____(arrive)home. WO Dong didn't send the letter by airmailthis time.He sent it by E-mail.同义句转换.Wu dong sent the letter by E-mail _____ _____ by airmail this time.填rather than ,或 but not 2道简单英语The train arrived _____ and we were just _____ to catch it.A:on time,on time on time,in timein time,on time in time,in timeHis friend invited him to a costume pary.（改为被动语态）He _____ _____ _____ a costume pary by his fri By this time tomorrow my daughter _____(arrive) home.At this time tomorrow my parents _____(clean) the house.I'll lend you the book when I _____(finish) it.As soon as he _____(arrive) in the city,he _____(give) you a phone call.We _____(rush) bec 动词填空：She ( ) by the time he got back.(go ) By the time that we got there,he was out. 翻译By the time he comes,I'll have left.( By the time he came,I had left.) has he _____(arrive)at the farm on time He _____(not finish)the work by now.为什么？ He always learn English _____ the radioon haishi by 2.He _____ the city for a long time.2.He _____ (leace)the city for a long time. He sent the letter by air mail _____ it might reach them in good time.A.because B.so as toC.so that D.for --Did you meet the professor at the airport?--No,he _____ by the time I _____ there.A.had left;got B.has left ;reached C.was leaving ;got D.left ;had got by the time he returns,the project probably ____ahead of time by the time ,by then by the time 区别Thomas Edison __ already ___a chemistry lab for himself by the time he___tenA.has,built,was B.had,built,was C.would,build,was D.was,building,wasHe'll be a professor by the time he _____ forty five .A.is going to be She had gone by the time he got back 其中的by the time 能用when 或while替换吗 By the time