Problem: How does the next paragraph end?

A boy wearing glasses is seated at a table. He is attempting to solve a rubik's cube. he
A: is being timed as he solves the puzzle.

Problem: How does the next paragraph end?

How to choose an unnatural color to dye your hair
Figure out if you're in the cool category.
This can affect how well a dye will take to your hair. Cool categories are based on your skin tone, eyes, and natural hair color.
A: People in the cool category will have deep brown eyes, hazel eyes, gray-blue, or dark blue eyes. The cool category includes both light and dark skin tones.

Problem: How does the next paragraph end?

A family is rearranging furniture in a living room. they
A: set up a christmas tree in the corner of the room.

Problem: How does the next paragraph end?

How to grow hydroponic mushrooms
Purchase a mushroom growing kit from your local gardening supply store.
Kits are blocks of compressed sawdust that have been saturated with mushroom seeds.
Immerse the mushroom block in a container of cold water.
A:
Make sure it is completely immersed; allow several inches of water to cover the top of the block. Allow the block to soak for several hours.