Can I write:
They aren't by the lake, they are by the hill.
My son had task in workbook to continue sentence
They aren't by the lake, they are by the ....
He wrote in such way
They aren't by the lake, they are by the hill
but his teacher told him that this sentence don't have meaning. I am not agree with her opinion. But maybe it's not right to use "by" with "hill". I have find answers on tasks on workbook and there was written:
They aren't by the lake, they are by the pond
What's difference between "hill" and "pond" in this sentence?