he __a machine the last time we saw him.（was operating）为什么不填was operating on?

he __a machine the last time we saw him.（was operating）为什么不填was operating on? The fat man bought __a lot of good things.(he) The machine is used to (l ) the train. 1.l dont know where l shall meet you.l dont know _____ _____ _____you.2.Let me tell you how you can make the machine work.Let me tell you ____ ____ ____ the machine work.3.He is so clever that he works out the problem alone.He is ______ ______ ____ Could you show me how l Should operate the machine?(改为简单句)Could you show me______ _______operate the machine? Bush is the president of the USA now,isn't he?__A yes,he isB No,he isn'tC Yes,he doesD No,he doesn't He joined the football clud two weeks ago .(同义句)He __ __a __ __the foot clud for two weeks. （化为简单句） He really doesn't know how he can operate the machine. The reason is __________ he is unable to operate the machine.为什么不用why? THE TIME MACHINE怎么样 the time machine是什么意思 The Time Machine 歌词 THE INFORMATION MACHINE怎么样 the mystery machine是什么意思 Henry made __a big mistake in the exam that he felt rather sorry.A sush B quite C so The man was very popular.He didn't seem to have __A any enemiesB some enemiesC many friendsD any friends joined ,joined in We __a country club that year.At the age of eight,he _a group of child dancers. The machine is such as l have never seen before .这句话的意思是?