This new country didn’t come into ___until the year 1918.

This act is enacted by the parliament, and shall come into______on a date to be fixed by p

The crime rate in this country______from 7% to 4% in the past two years.A．has fallenB．had

We will be losing money this year______our new plan works well.A．ifB．unlessC．sinceD．until

The new staff didn’t know how to use the system _________ I explained it to him yester

Years ago we didn’t know this but recent science______that people who don’t sleep well soon get il

A completely new situation will____when the examination system comes into existence.[ ]A. riseB. ari