Have you read this book yet?为什么这句话中有个yet,yet好像是在否定句中使用的.为什么在此出现,有没有画蛇添足的效果

Have you read this news? i ___about it in the TV A had read B read have you read this book ___?A already B yet Have you read this book?Yes,I _it three hours agoA.have done B.have read C.readed D.did have you read this book?Have you read these books?Yes,l ____it three days ago.A.have done B.have read C.read D.did 这个答案是D.为什么不选择C啊? I have ____ this book.You can take it away.A.to read.B.read.C.reading.D.reads Have you read this book?It's worth reading.汉译 -Have you read this wonderful magazine?-Yes,l just___it last week.A.read B.have read C.had read D.was readingjust不是用于现在完成时吗？为什么要选A have you read this book?do you read this book?为什么疑问词要用have 而不是do -----Have you read this book?-----Yes,it’s my favorite book.I ___ it twice.-----Have you read this book?-----Yes,it’s my favorite book.I ___ it twice.A.have read B.is reading C.will read D.read Have you read this story___?Yes,I read it in a newspaper several days__ I've already read this book.这个句子换成疑问句是Have you read this book yet?还是Have you read that book yet? - ----you read the story -Yes.I ----it at school.A.Have ;read B .Did ;read C.Have ;have readD.Did ; have read 请问哪个答案正确?为什么? I have never read this novel.how about you?A.So have I.B.Yeah,me too.C.Neither did I.D.Me neither. I happened ____ this book before.A.having read B.to have read C.read D.reading I won't buy this novel because I--- it twice before.A.have read B.read C.had read 为什么? 一道英语单选,－School will soon be over .Can you recite the text now －I'm not sure,but I __ it all this morning .A.have read B.was reading C.read D.had read have you read the article yet?yea i ___ it last night.a:have read ; b:read. ()I have read this book ,you can have itA thoughB untilC since