Tim is working for a big firm.He is working for a big ( ) A

Tim is working for a big firm.He is working for a big ( ) A he is working for a big firm? he is working for a big firm as an engineer 句中的working是什么时态 he is working for a big firm.和he works for a big firm.有什么区别? Tim is working for a big firm as an engineer是什么意思 He is working for a big firm and he has visited a great numb 现在完成时填写： He is working for a big firm and he aleady ____(vis 英语翻译Tim is working for a big firm as an engineer蒂姆在一家大公司担任工程 关于新概念英语第四课He is working for a big firm and he has ...还有一句He and连接要时态一致 He is working for a big firm and he has already v he is working for a big firm as an engineer这句话的as用对没有? He is working for a big company.He is looking for a pen.这 两个