IN: Write the next sentence in this paragraph:
How to find a low airfare
Shop around.
Don't assume that all online travel agencies have the same fares. They don't.

OUT: Especially on international fares, one of these online travel agencies could have a fare several hundreds dollars less or higher than another. It is not uncommon for one site to have tickets that aren't even available on another site.

IN: Write the next sentence in this paragraph:
How to enjoy your last night on a carnival cruise
Gather 2-5 cruise friends.
Exchange numbers and addresses or even email addresses.
Get non-alcoholic drinks.

OUT: You can get them unlimited with a soda card. Go to the 24 hour pizza parlor.

IN: Write the next sentence in this paragraph:
How to determine your fat burning zone
Calculate your fat-burning zone with a formula.
There's a relatively simple formula to help you determine where your fat-burning zone falls. It's not 100% accurate, but will give you a relatively reliable range to aim for.

OUT:
First, find your maximum heart rate (mhr). To do this, subtract your age from 220 if you're male; subtract your age from 226 if you're female.