Problem: What happens next in this paragraph?

How to build a concrete pool
Mark out and excavate the area of the yard to install the concrete pool.
The hole should be dug approximately 9 to 12 inches (23 to 31 cm) deeper than you want the depth of your pool, to allow room for surfacing the bottom of the basin. A lip is also left around the perimeter of the hole to accommodate sufficient working room for placing forms.
A: Install plumbing, using pvc pipe and strong bonding material. Your plumbing should include a drain at the bottom of the pool as well as the necessary structure to ensure safe water flow throughout the pool.

Problem: What happens next in this paragraph?

How to take a spirometry test
Avoid activities which might affect your normal lung function.
To ensure accurate results, you need to take the following precautions in the hours leading up to the test :
Ask your healthcare provider which medications you should avoid on the day of the test. Do not smoke within 24 hours of the test.
A: Do not drink alcohol within 4 hours of the test. Do not exercise strenuously within 30 minutes of the test.

Problem: What happens next in this paragraph?

How to choose a combo alarm system for a car
Visit a dealer.
Ask if your car dealership can recommend a car combo alarm system. As a professional, your car dealer will most likely know which types of alarm systems are available for your car and which are most compatible.
A: Take a minute and think about which specific car alarm features would be useful to you. Though all combo alarm systems for cars combine a number of features, each system offers different a combination.

Problem: What happens next in this paragraph?

How to remove a dent from wood
Dab the dent with water.
Pour about an ounce of water over the affected area, just enough to cover the dent and a small part of the surrounding wood. Make sure the dent is completely wet.
A:
Pooling inside the depression itself is a good sign that the spot has been thoroughly soaked. Using an eyedropper or kitchen baster will give you more control over where you apply the water.