He ____ a machine the last time we saw him.A.was operating on B.was operating Why 这2个区别?

It is said they he has invented a new machine. He ____ _____ _____ _____invented a new machine. His birthday is on October 15th.同义句 He ____ ____ on October 15th. 谁能做一下这个英语填空?Edison began to make a talking machine in 1877.At first he used paper ____ holes yo make a sound.He worked ____ months on this idea,at he found ____ record a person is voice.But the first machine was very simple and He ____ a machine the last time we saw him.A.was operating on B.was operating Why 这2个区别? He ordered a washing machine by phone yesterday,and _____ machine will arrive this afternoon. --Is Kate's birthday March 19th?--Yes,____.A.she does B.it isC.he isD.she is To test his idea,he invented a machine. 句型转换 There is a washing machine in the corner.There is a machine ____ ____ ____ _____ _____ in the corner. not easy for them ____ by themselves.A.to repair the machine B.repaired the machineC.repairing the machine D.repair the machine选哪个 为什么 Hi everyone,today i will talk about my favourite cartoon .He is name is Doraemon ．He was born on September the third ,2112.But he got the modern world by magic machine .Now he is lives in a boy's home and make friend with the boy called Daxiong .Th 同义句转换：1.Today is June 4th.He is coming on the 6th.Today is June 4th.He is coming ____ ____ ____ ____2.My mother isn't busy this evening.My mother____ ____ this evening. 英语翻译he is a student ____ ____. He ____ ____(mend) a car He ( )(成功)desiging a new machine last year He ( )(成功)desiging a new machine last year( ) 内填写 success 的 正确形式 并说明理由1.This room is ___ that one.A.three times as larger as B.three times the size ofC.three times large D.three time as large as2.The lost of machine was reduced by ____.A.20 percent B.20th percentC.percent 20 D.percent th20 3.Are there en The machine wants ____.(A.to repair B.repairing C.being repaired D.to have repaired a video game machine He ordered a washing machine by phone two days ago and ___ machine will arrive this afternoon.A.a B.an C.the D./