you can use the word across in a sentence by saying
i went across the river in a tube.
we went across a river
I was on holiday and i sailed across the sea
I swam across the river yesterday.
They trudged across the torrid sands of the Sahara.
The caribou ran across the field.
The lights were strung across the hallway.
The body by then partially dismembered was dragged across a field.
I walked proudly across the stage with my diploma in hand.
The word "notoriety" is the noun form of the word "notorious. " An example of a sentence using the word "notoriety" is "The notoriety of the gunman had spread across three states. "
Write a sentence that makes sense and try putting the word across in the sentence.
"You must take caution in walking across the wobbly bridge"
The metorites showered across the sky- it truly was an amazing sight!