I bought three pencils ____ 50 cents each.A.in B.on C.by D.at应该是那个介词呢?

i bought a book three days ago.改为一般疑问句. I bought the book three days ago的同意句 I have bought three ballpoint pens,none of _____writes smoothly. I bought the bike three years before和I have seen the film ago为什么错 下面选择题是选have had 还是have bought?I ( ) it since three years ago.A.had B.bought C.have had D.have bought 英语连词成句答案some I banana bought days three ago .I bought a dress three days ago.变同义句 怎么变? 首字母填空的一道题 On my way home I bought three l_____tickets.无字母限制 I bought （beautiful） hat of the three.用适当形式填空 i had five tickets ben bought two from me and i sold ____(剩余的)three to jack I () these books for three years.A,bought B,have bought C,have had (请简要说明为什么选此答案） I _____ it here three days ago.选择哪个 brought 还是 bought?答案是brought，但是我觉得bought好像意思上也对， My new glasses cost me ( )the last pair that i bought为什么答案是：three times as much as I have bought the new mp3 for three days.这句话有什么语病哪?（单句改错） I bought three pencils ____ 50 cents each.A.in B.on C.by D.at应该是那个介词呢? My glasses cost me _____the lkast pair I bought. Athree times more than B.three times as many asC.three times more as D.more than three times请详细讲明.C应是three times more than I bought two dozen I bought it___20 yuan.