Problem: How does the next paragraph end?

How to do the pilates jackknife move 
Lie down on your back on the pilates mat with your legs straight and together. 
Keeping your arms right beside your body with your palms facing down, raise your legs up to a 90-degree angle without bending them. 
Exhale as you lift your hips off of the mat and curl your abs in.
A: Keep maintaining the 90-degree angle of your hips and legs. You'll know when you've completed this step once your knees are directly above your nose and your legs are straightened parallel to the mat.

Problem: How does the next paragraph end?

Men are playing polo in a field. The man in white hits the ball. the man in white
A: hits the ball again.

Problem: How does the next paragraph end?

How to stop itchy gums 
Rinse your mouth with cool water. 
Rinse out your mouth with cool or cold water. Rinsing may get rid of any debris that is causing your gums to itch and help soothe inflammation and swelling.
A: Try and rinse with filtered or bottled water. You could be allergic to something in your water and that is causing your itchy gums.

Problem: How does the next paragraph end?

How to become an astronomy teacher 
Develop your own love for astronomy. 
Although astronomy, by its nature, is a fascinating science, you need to discover and develop this fascination for yourself before you can teach it to others. It is helpful to develop a love for astronomy as early in your life as you can, although it can also be a love you discover in early adulthood or later in life.
A:
There are several ways you can nurture this fascination for yourself at any age. Studying the night sky for yourself is the surest way to discover the wonders of the universe.