Mr,Li is an engineer __professionA by B on这题为什么用by 不用on

Mr.Smith is an engineer. Mr,Li is an engineer __professionA by B on这题为什么用by 不用on Mr Wang is an engineer and he has a wife and a son同义句转化Mr Wang is an engineer,_______ a wife and a son Wang li is an engineer.用a cleaner 改为选择疑问句 Mr.Li is an English t .(补充词语) 根据情景填单词：Mr .Li is an English t_____ 空白处填什么?Mr Li has three daughters,none of________ is an engineer.whom但是,who为什么不可以?原因:who既作of的宾语,又作is an engineer的主语.所以填who.-------------求大神详细解答. Is he an engineer or an architect? He is an English engineer.(a Gearman engineer)(选择疑问) ( )chinese teacher is mr li My elder brother is an engineer. His___(old) brother is an engineer. Mr.Li is an ____man.He likes learning____history.（ancient,要做题方法.] mr white has been an engineer for about ten years(保持句意) mr white has____ ____an engineer for 英语翻译Wang Li is an engineer .She likes drawing pictures.She works in car factort.She designs cars.She goes to work by car he is an engineer（原句） he （）（）an engineer His ambition is to be an engineer 同义句 He____be an engineer when he ____up Jack wants to be an engineer when he is older (对an engineer提问）