If city noise _______ from increasing, people _______ shout to be heard even at

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If city noise _______ from increasing, people _______ shout to be heard even at

题型：不详难度：来源：
If city noise _______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.
A．are not kept; will have toB．are not kept; have to
C．do not kept; will have toD．do not kept; have to

答案
A
解析
keep sth. from doing sth.的被动形式；have to可以用于任何人称。
举一反三
He ______ prison two years ago and now he _______.　　
A．was put in; was set free 　B．was shut into, is set free
C．put into, has been set freelyD．was put into; has been set free

题型：不详难度：| 查看答案
  My brother ______singing ______ dancing while I _____ dance _____sing.
A．prefers , to , would rather , thanB．would rather , than , prefer , to
C．prefers , than , would rather ,toD．would rather , to ,prefer , to

题型：不详难度：| 查看答案
I didn’t manage to do it _____ you had explained how.
A．untilB．unlessC．whenD．before

题型：不详难度：| 查看答案
  Until the present century, ________ demand for natural gas.
A．littleB．and littleC．there was littleD．was there little

题型：不详难度：| 查看答案
_______ are the days when the teachers were looked down upon .
A．GoneB．GoC．To goD．Going

题型：不详难度：| 查看答案
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