You have kept ____for 16 hours!You'd better ____ a rest.A.working;to haveB.working; haveC.to work;to haveD.to work;have请选其一项说出为什麽谢谢

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 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 英语 What kept you? I am sorry to have kept you waiting so long.这句为什么用to have kept 而不是to keep 与时态有关系吗