Many times teachers will tell you to go onto the next question if you do not know the answer.
The mysterious creature jumped onto the log.
The mechanic drove the customer's car onto the ramp.
His confidence was shattered by the failure of the experiment. She stepped onto the stage with confidence after her coach gave her the pep talk.
The thermos fell of the car onto the road.
I'm going to collapse onto the floor.
Fresh bait was being loaded onto the barge.
Rocks can tumble dangerously onto the road.
He came onto me like he thought he was a real Casanova.
He rose through the ranks of the company by hanging onto the tails of my waiscoat.
The only plural noun in the sentence is 'rails', the singular noun is 'rail'.The sentence using the singular noun:"The thick rail provided a place to hold onto."
She emitted a loud cry before collapsing onto the floor.
When she stepped onto the stage, she was silhouetted by the bright lights behind her.