Problem: How does the next paragraph end?

Three people wearing white shirts with red hearts on them and black tights begin dancing a dance routine in a dance studio facing a camera. the three people
A: use foot work, and hands to exhibit the dance moves.

Problem: How does the next paragraph end?

Young man lifts up his ankle. Man wearing black pants puts on a white sock. man
A: is loosening his black shoe laces.

Problem: How does the next paragraph end?

How to house train an older dog 
Learn as much as you can about the dog's background. 
If you have recently adopted or purchased the dog, call the source and find out as much as you can about the dog's previous habits and upbringing. It is helpful to know if the dog was partially house-trained in the past.
A: It is also helpful to know if the dog was confined for long periods of time in a particular environment (exclusively outdoors, on a concrete floor at a shelter, in a kennel, etc. ) as this can cause surface preferences that you may need to overcome.

Problem: How does the next paragraph end?

How to clean aquarium plants 
Use your fingers. 
Wash your hands thoroughly. Next, gently rub the algae off of plants while the plants are still in the aquarium.
A:
Remove any algae that you've rubbed off from the aquarium. Once you have clean plants, maintain their cleanliness on a weekly basis by rubbing the algae off them while they are in the aquarium.