英语单选题:More and more people have realized that we will not have cleaner water……More and more people have realized that we will not have cleaner water to drink unless something ______ soon.A.was doneB.be doneC to be done D.is done
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英语单选题:More and more people have realized that we will not have cleaner water……More and more people have realized that we will not have cleaner water to drink unless something ______ soon.A.was doneB.be doneC to be done D.is done
英语单选题:More and more people have realized that we will not have cleaner water……
More and more people have realized that we will not have cleaner water to drink unless something ______ soon.
A.was done
B.be done
C to be done
D.is done
英语单选题:More and more people have realized that we will not have cleaner water……More and more people have realized that we will not have cleaner water to drink unless something ______ soon.A.was doneB.be doneC to be done D.is done
.D unless引导的条件状语从句,主句是将来时,从句中用一般现在时或现在完成时代替一般将来时.
选c 理由是这些事还没有做,而是很快要做,因此选c
越来越多的人已经意识到我们将不能。。。
D 主语是将来完成时,从句后面有something,后面为一般现在时态。