-Driving after drinking alcohol should be punished, I think.-Sure, it is several
来源：网络
时间：
推荐文章
—Driving after drinking alcohol should be punished, I think.
—Sure, it is several months________ the ban came to effect in the whole country
A.before
B.until
C.since
D.after
试题答案
C
It is 时间段+since +句子（句子用过去）“--酒驾应该受到惩罚。--自从在全国开始实施已经几个月了。”
Come to effect 生效