问题
选择题
The new law would come into ___on the day it was passed.
A．effect
B．use
C．service
D．existence
答案
答案：A
考查短语：come into effect开始生效，句意：新法律会在通过的那天开始生效。come into use开始使用，come into service开始服务，come into existence开始存在。
根据句意所以选A。