★新概念英語頻道為大家整理的新概念英語第一冊練習(xí)冊答案90課，供大家參考。更多閱讀請查看本站新概念英語頻道。
    89 A 1.yes,it is.
     2. yes,I did.
     3.20 years.
     4.1976.
     5.Because he's just retird .he wants to buy a small house in the country.
     6.68,500.
     7.Yes,I do .
     8.Yes,I am.
    B for:three hours,two weeks ,ten minutes,five years,a mouth.
     since:last May ,Sunday ,1998,1st January,march.
     for
     since
     for
     for
     since
    90
    A Has he take his medicine yet ?
     No,he hasn't.He not take his medicine yet.
     Has she eat her supper yet ?
     Yes,she has.She is eat her supper ten minutes ago .
     Have you speak to the teacher yet ?
     Yes,l have.l've just speak to the teacher .
     Have they buy their new car yet ?
     No,they haven't .They are not buy their car yet .
     Have you read this book yet ?
     yes,l have .l read this book six mouths ago .
    B 1.How much does this bicycle cost ?
     2.May l have a look at it ,please ?
     3.How long have you lived here ?