【原创】The United States is often referred to as a melting pot because its citizens come from every corner of the world with _____ cultures.
Did you have trouble ________the post office?
—Dad, I've finished my assignment. —Good,and ________you play or watch TV, you mustn't disturb me.
This is not a match.We're playing chess just for________.
I want to buy a blue jacket to ________my blue trousers.
—I just heard that the tickets for tonight's show have been sold out. —Oh, no!________.