The_______waiter came up to us and said,"You are welcome."
—________ when has the country been open to international trade? —1978,I suppose.
What shall we use for power when all the oil in the world has________?
No matter what you do,you must ________ your mind________ it.
He thinks only of himself;he doesn’t________ other people.
With that calm and________ expression of hers,our anxiety almost disappeared into the air.