Can any one know the answer? Please I need answer

A trial balance is just a listing of every account with its ending balance. So the accounts all need to be caught-up and balanced first so that you have that ending balance. Then just list them in order (i.e. Cash first, etc.) with the balance on the proper debit/credit side.

It's mostly just copying and not difficult at all.

This page shows a trial balance both individually and as part of worksheet, since I don't know which you're doing:
Principles of Accounting Chapter 4 (http://www.principlesofaccounting.com/chapter%204.htm)

How do u prepare a trial balance and how do u correct mistakes.