Instead of:
All correspondence is to be filed in chronological order.
Use:
You should file all correspondence in chronological order.
Instead of:
A mistake was made on the bill.
Use: I made a mistake on your bill.
Instead of:
Funding for literacy programs will be cut.
Use:
The government will cut literacy funding.
Hint for identifying passive voice:
The sentence usually contains a past participle (generally with “ed” on the end) and a form of the verb “to be".