Problem: How does the next paragraph end?

The guy puts the lotion on his arms, stomach, chest, waist line and the parts of his back he can reach. the guy
A: stands and puts on more of the sun block lotion while other people in the back ground stands/sits on the sand talking.

Problem: How does the next paragraph end?

How to lead a bachelor's life 
Learn to take good care of yourself. 
Learn about what makes you look good and what makes you feel good. This is a time in which you can form your preferences about your style, your manner of dressing and the way you wear your hair.
A: Indulge in crafting your image the way you want it. Maintain your dental and bodily health by having regular checkups with your dentist and doctor.

Problem: How does the next paragraph end?

How to care for a guinea pig with a long term injury 
Get a vet-advised painkiller for your pet. 
Many vets who look after small animals will be able to get dosages in guinea pig sizes. Follow your vet's advice as to dosage and method for giving to your pet.
A: If your vet advises against such usage, then skip this step. Get small, thin syringes that you can fill with water and keep a bowl handy.

Problem: How does the next paragraph end?

How to measure a toddler for a bike 
Gather the materials needed for taking your child's measurement. 
You'll need measuring tape, a pencil, and a book or a ruler (or some other flat surface). 
Have your child stand upright against a wall.
A:
Their head should be facing straight ahead, and not tilted upwards or downwards, so you do not get a faulty measurement of their height. Make sure their feet are side by side, with both feet firmly on the floor and their heels touching the wall.