I bought two souvenirs before two weeks哪里错了?

I bought two dozen I bought two souvenirs before two weeks哪里错了? When have you bought the book?Two weeks ago.I have bought it for two weeks. I have bought the computer for two years.怎么改? I bought the bike two years ago.(同义句) i bought this pair of trousers two days（ ）. I’ve already bought two new bikes改为一般疑问句 I bought the bike two years ago.=_____ _____ two years _____ I bought the bike. ____ you bought any books?Yes,I ____ some two week ago.A.Have,have bought B.Did,bought C.Have,bought D.Did,have bought选择题 I have bought the bike和I have bought the bike for two years,哪个句子对, I have already bought this computer for two year._____改错题对不起，错了，是I have already bought this computer for two years._____ the computer is very expensive.I bought it two weeks ago.the computer is very expensive.I bought it two weeks ago 合为一句! I bought this MP4 two weeks ago改同义句I ___ ___ this MP4 for two weeks I bought several books two weeks ago.（改为同义句）I --------- ---------- several books for two weeks. 英语测试报……I o___ bought two pens in the store. 写三个“I bought the book two days ago.”的同义句 I have already bought the book for about two years.这句话错在哪里? I have bought the bike for two years.此句有错吗?