Prior ........... 2012, the industry was unregulated. In .................. years, however, the 

Our survey did not succeed in getting all the information we need and so we shall have to 

Choose a proper preposition/particle:

I mean, ... the purposes of our discussions about social stability, everyone’s involved, aren’t they?

It was clear ......... that

there were going to be problems.

The government introduced ...............................changes to healthcare delivery.

Every genetics

student learns the two basic

However, to achieve these goals national efforts must be ... by effective international cooperation.

Companies should ... a stance on important social issues to build a brand that consumers trust and respect. 

The case ... change is tightly aligned with Resistance Management

• The new version of Windows is not problem-free. ..., it is still an improvement on the previous one.