Please advise which preposition is correct in the following sentences:
1a)Those birds on the tree are chirping loudly.
1b)Those birds in the tree are chirping loudly.
2a) There is a small town on the other side of the river.
2b) There is a small town at the other side of the river.
I would like to ask the word "Paper" is countable or uncountable noun.
So I use any or some in the this sentence:
Do you have any or some paper?
Appreciate for your help. Many thanks.