Tibet has been a part of China since _________ years ago.
—Why do you want to see the dolphins? —______ I like them.
—Do you know the girl? —Yes, ______ name is Linda.
Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.
—What ____ news! —Yes, all of the children were ____.
New York is one of ____ in the world.