英语If city noises _______from increasing,people _______shout to

题目

英语If city noises _______from increasing,people _______shout to
9.If city noises _______from increasing,people _______shout to be heard even at the dinner table about 20 years from 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
为什么?

答案

A
主句用一般将来时,从句用一般现在时,从句是个被动语态