成人英语三级

If city noises_____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 keep; will have to

D. do not keep; have to

A主从句都谈将来，从句用一般，主句用将来。此句从句是一般过去，所以主句要用一般将来。