Problem: How does the next paragraph end?

How to fold a napkin
Fold the napkin in half to form a long rectangle.
Starting at one short end, fold the napkin like an accordion all the way to the opposite end.
Holding one folded end, place it into your drinking glass.
A: Let the napkin fan over the top of the glass. Lay the napkin out in front of you.

Problem: How does the next paragraph end?

How to ride a bike with one hand
Make sure that you're good at riding a bike with two hands.
You should be able to be balanced, and you shouldn't be falling off at all. If you can't ride with two hands, you won't be able to ride with one.
A: Get on your bike and start riding. This time, loosen the grip of one hand (whichever one you feel more comfortable doing).

Problem: How does the next paragraph end?

How to make a viola tennis racket
Get rid of all the extra bits.
The extra bits are the chin rest, the bridge, the strings and the pegs. You won't be needing them for this project.
A: Fill the inside of the viola with expanding builders foam. There are plenty of good makes at your local hardware store.

Problem: How does the next paragraph end?

How to choose a career good for your health
Find a career with low on-the-job injuries.
Let's be clear: some jobs are just more dangerous than others and have higher rates of on-the-job accidents and fatalities. These careers may be more dangerous because they involve heavy machinery.
A:
They may also be risky because they expose workers to things like falls, explosions, electricity, drowning, or other dangerous situations. Consider checking with the us bureau of labor statistics to find out more, as they keep track of fatal and non-fatal rates of injury in different sectors each year.