Our homework is always piling ______ .And the teachers, for their part, are also constantly complaining of endless exercise-books coming in.
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Because of his nervousness, he kept shaking my hand and wouldn't let go______ it.
That economist is speaking______ behalf of the rich.
The annual income of our village was the highest______ record last year, and people all agree that we owe this to the new railway.
The best way to treat yourself to something nice is to save ______ for it and buy it when you can truly afford it.