题目内容
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 to B. are not kept; have to
C. do not kept; will have to D. do not kept; have to
A
【解析】句意:如果不制止噪音继续污染,从现在起20年后人们就不得不在吃饭的时候大声喊叫才能听得见。keep sth. from doing sth.的被动形式;have to可以用于任何人称。
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