He adds on some extra toppings to his pizza.

The backyard is abutting on the neighbor's property.

He asks her out on a date.

He asked her out on a date last night.

The two houses abutted on each other.

The lion roars on the savannah.

The rocket blasted off into space.

She belted out her favorite song at the karaoke bar.

He is asking out his crush on a date.

The crowd was roaring on as the team scored the winning goal.