1、Greater efforts to increase agricultural production must b

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1、Greater efforts to increase agricultural production must be made if food shortage _____ avoided.
A is to be B is 为什么不用B,if条件句不是可以用现在时表将来吗
2、The house belongs to my aunt but she ______ here any more.
A hasn't lived B doesn't live
为什么不用A?而用B

A. 用a因为避免饥荒是在未来,所以用to be. B. 用b因为姑姑现在不在这住了.用a说不通.

1、Greater efforts to increase agricultural production must b Greater efforts to increase agricultural production must be Great efforts to increase agricultural production must be ma 1.Great efforts to increase agricultural production must be 英语单选题,要原因Greater efforts to increase agricultural production Great efforts to increase wheat production must be made if b Great efforts to increase grain production ____ if food shor 118.Greater efforts to control the population must be made i Greater efforts to control the population must be made if fo 解答英语词性转换急1,They want to ( )【increase】 their production.2,( Undoubtedly,the government is making greater efforts to make Premier Wen Jiabao has strongly advised greater efforts to e