题目内容

If city noises ______ from increasing, people______ shout to be heard even at the dinner table 20 years from now. (MET1992 )
A．are not kept; will have toB．are not kept; have to
C．do not keep; will have toD．do not keep; have to
A
 在真实条件状语从句中，主句应用一般将来时，从句用一般现在时。还 要注意city noises和keep是被动关系
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