Problem: What happens next in this paragraph?

Two men are assembling a bicycle on a stand. They put the tires onto the bike. they
A: put the pedals on the bike.

Problem: What happens next in this paragraph?

How to make a leopard gecko vivarium
First of all you will need the housing.
Get a 20 gallon (75.7 l) long terrarium or vivarium, but you could do with a 15 gallon (56.8 l). You could also use a rubbermaid tub but make sure the dimensions are at least 30 " x12 " and that it is tall enough for no escape.
A: You could get a tank with sliding doors instead, which would make taming easier. Buy, or have, a heating device.

Problem: What happens next in this paragraph?

Then, the teen takes the glass shaking his hand and drinks the water while the laugh. After, the youth takes the glass, then holds a cup while the teen fold his right hand. next
A: , the teen takes a cup and pretend to drink while making gestures of pain.

Problem: What happens next in this paragraph?

How to make taco salad
Mix the salsa and sour cream together in a small bowl using a fork or mini whisk, then set it aside.
Keep mixing until the color is uniform and there are no unmixed streaks. Set the dressing aside, preferably in the fridge, so that it's nice and cold.
A:
Make sure that you are using the smooth kind of salsa and not the chunky kind; do not use pico de gallo. Cook the ground sirloin over medium-high heat.