1. I hope, when you finished this exercise, you____many mistakes in it.
    A. won’t make
    B. won’t have made
    C. won’t be making
    D. won’t have been making
    2. ____he arrived at the airport, he realized what had happened there.
    A. The moment when
    B. The moment
    C. Until
    D. At the moment
    3. Water is to fish____atmosphere is to men.
    A. that B. so C. what D. so does
    4. I’m sure your suggestion will____the problem.
    A. contribute to solve
    B. be contributed to solve
    C. be contributed to solving
    D. contribute to solving
    5. That our environment has little to do with our abilities, characters and behavior____central to his theory.
    A. is
    B. are
    C. has been
    D. have been
    答案及解析： BBCDA
    1.【B】時態(tài)問題。根據(jù)句意，主句的動作應(yīng)在將來某一動作完成時完成，只有只有B的將來完成時較恰當(dāng)。
    2.【B】the moment這里做連詞用，表示“就在……時，就在……的那一刻”，前面不需要加介詞，如: Thunderous applause broke forth the moment the pop star appeared on the stage.
    3.【C】A is to B what C is to D是固定結(jié)構(gòu)，表示“A與B的關(guān)系就像C與D的關(guān)系一樣?！?BR>    4.【D】contribute表示“有助于，促成”時，搭配是contribute to doing sth.
    5.【A】主謂一致。本句的主語是一個主語從句，即that our environment…behavior,所以應(yīng)用單數(shù);另外，本句只是表達(dá)一般陳述，故用一般現(xiàn)在時即可。