The ducks swam up the river.
The River Thames is in England.
There was a river of blood down the street.
"Is" is the second word of the question, "What is the second word of this sentence?"
The word river is a noun, a common, singular, concrete noun.
When it is at the start of a sentence.
"The canoe entered through the mouth of the river." "The mouth of the river was a good place for fishing." :)
Writing a sentence with a vocabulary word in it
we went across a river
He was prepared to cross the river.
'She emerged from the river'
you can use the word across in a sentence by saying i went across the river in a tube.
The Tigris River is asian and is between mesopotamia and euphratas
I went to the park and i saw fishes in the river
The river is surrounded by levees and pumps.
The playtpus swam in the river.
The Nile river floods and leaves fertile soil.
He moved to a highland far from the river.
We hiked inland, searching for a river.
I swam across the river yesterday.