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It’s _______ orange. It’s _______ yellow orange.

A．a, an             B．an, a             C．a, the             D．a red, a red

_________ eight-year-old girl saw _________ UFO yesterday.

A．An; an            B．An; a             C．A; a              D．A; an

_______ girl over there is my sister. She wears ________ orange coat.

A little boy wrote _____ “u” and _____“n” on the wall.

A．a; an             B．an; a             C．an; an            D．a; a

This is    orange. That ruler is     orange.

A. an, /   B. an, an    C. a, an