Problem: How does the next paragraph end?

How to get free virus protection software
Find out which version of windows you are running.
In general, most free anti-virus programs are intended for use with windows operating systems; however, new versions are updated for the latest windows versions.
For example, if you are still running windows xp, make sure you do not download a version only intended for windows 8 and higher.
A: Read the reviews carefully before downloading. Tech websites go into detail about how to avoid paying for upgrades that you don't want and other common pitfalls.

Problem: How does the next paragraph end?

How to beat piriformis syndrome
Rest your muscles.
If you are having pain and discomfort from piriformis syndrome, then one of the best things you can do is rest your body. Piriformis syndrome may be the result of irritation or injury from exercise or other forms of strenuous activity.
A: If you have a physical job or you like to exercise every day, then this advice may be a challenge for you. But it is important to rest to avoid further damage or irritation to the piriformis and to allow it to recover.

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How to attain a longer lifespan on the japanese diet
Eat more whole grains.
Japanese people consume large amounts of grain-based dishes, largely centered on rice or noodles made from whole grains. According to the japanese government, you should try to eat five to seven servings a day.
A: These foods should be the staple of your diet. One serving equals one slice of bread or cup of cooked rice or noodles.

Problem: How does the next paragraph end?

How to clean a saltwater tank
Remove uneaten food.
While you should only be feeding the fish in your tank enough food for them to consume within an hour, there may occasionally be food leftover. Take a net and skim the uneaten food out of the tank.
A:
Do this an hour after you've fed your fish. If you leave uneaten food in your saltwater tank, it can decay and make the water cloudy.