I have kept a record of informal conversations involving 300 students.这里的revolving为什么不能用covering来替代呢?两个都有涉及、包含的意思啊

I have kept the book （for a week）.提问()() have () kept the book? I have kept a record of informal conversations involving 300 students.这里的revolving为什么不能用covering来替代呢?两个都有涉及、包含的意思啊 I _______ this book for two week.I have to return it now.A.kept B.have kept when I was at school,I ( )a diary every dayA.write B keep C.kept D.have kept 英语的一篇完型 ...For the past two years,I have been working on students’ evaluation of classroom teaching.I have kept a record of informal conversations 67 some 300 students from at 68 twenty-one colleges and universities.The students were 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 汉译英：do you have a record library? have a hold on your record是什么意思 Does he have a ____ (crime) record? I am sorry that I have kept you__________(等）for a long time . I'm sorry.I have kept you ()for me so long.A:wait B:waiting i have kept this magazine for a week.=i __this magazine __ ___.速求 I _____this book for two weeks.I have to return it now.A.borrowedB.have borrowedC.keptD.have kept i have kept you completely off the --These books ____ in the library for along time .--I think they are too old to be read .A.have kept B.had kept C.have been kept D.were kept顺便也告诉我第一句话是什么时态啊 I___this book for two weeks,I have to return it now.A.borrowed B.have borrowed C.kept D have kept I must return the book to Li Lei.I( )it for two weeks.A.kept B.borrowed C.have kept D.have borrowe 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