Problem: What happens next in this paragraph?

A large group of people are standing on a bridge. they
A: are looking into the rapid waters below.

Problem: What happens next in this paragraph?

How to make cold calls
Know your cause.
Identify an organization that you would like to help
Have a plan.
Make sure you have a project plan that includes the activity, fundraiser, or event, the date and location.
A: Have all the details planned out so there are no surprises for you or a donor. If they give once to a successful event, they are likely to give again.

Problem: What happens next in this paragraph?

How to make your desktop look cool
Build a library of cool wallpapers.
The one thing you'll be looking at the most on your desktop is the background, or wallpaper. You can use virtually any picture as your wallpaper, and there are hundreds of sites online that hosts thousands upon thousands of wallpaper images.
A: Pick a dozen or so that match your style and add them to your windows wallpaper slideshow. For the best-looking wallpapers, ensure that they are the same size as your desktop resolution.

Problem: What happens next in this paragraph?

How to clean a cement mixer
Remove the drum from the mixer.
This is usually done by turning the drum in the opposite direction to that of its normal rotation.
Place the drum on its side and put some firewood and paper into the drum and set alight.
A:
The drum needs to be on it's side so it can draw in air. If the drum is upright, it will not and the fire will go out.