问题

If city noises _____ from increasing, people _____ shout to be heard even at the dinner table20 yearsfrom now.[ ]
A: are not kept;will have to
B: are not kept;have to
C: do not keep;will have to
D: do not keep;have to
B: are not kept;have to
C: do not keep;will have to
D: do not keep;have to
正确答案是: