have kept you waiting.句子分析下I'm sorry to have kept you waiting 对不起让您久等了这里 have kept you waiting 是现在完成进行时?还是 keep sb doing 如果现在完成进行时,那这里 的you 做什么成分.现在完成进行

请高人指教,本人就读网络专升本,46.This company was the first____________portable radios as well as cassette tape recorders in the world.A.producingB.to produceC.having producedD.produced满分：2 分47.I'm sorry to have kept you waitin i have kept you completely off the you kept me waiting for two hours.为什么用 kept,而不用have kept. Do you like animals have you ever kept a pet? you __________(keep) me waiting for two hours.横线处填 kept 还是 have kept为什么? how long have you kept this book?这句话对吗? how long have you kept the book?的同义句. How have you ____ these books?borrowed,lent,kept,bought say good bay ,but it is not forevery good bay ,the one time we must have a meeting ,you must waitin大家帮帮忙 在下不懂英语 you ----me waiting for two hours.i ----for you since five.a,kept ...waitedb,have kept...waitedc,kept...have waitedd,have kept...have waited怎么选,为什么,这句子怎么翻译啊 sorry you waiting sir (A)to have kept(B)have kept(C)to kept选那个能告诉我选那个的原因吗最好能说明理由 you will only make yourself more tired,------------on your feet.to keep keeping having kept to have kept I am sorry to ( ) you waiting so longA.kept B.be keeping C.have keep D.to be kept What is it .you want me to see to?A.Having been kept B.To keep C.Having kept D.To have kept I am sorry to have you kept you waiting.句中不定式作什么成分 you are aiways so nice to me Imsorry to have kept you waiting.是什么意思,谢谢帮忙 you are aiways so nice to me Imsorry to have kept you waiting. You（ ）have kept your word.I wonderYou（ ）have kept your word.I wonder why you changed your mind.A.must B.should C.need D.would