Library research and consultation, however, are only part of your preparation.
Your preparation includes both consultation and library research.
Consultation and library research are all the preparation you need,
Case studies provide little information towards the appropriate methods and studies that should be taken.
The older generation is ready to change.
A man is riding a bike.
You may have done multiple things.
People in a store.
There are only 1,500 words in that essay.