—What color is ___ orange?—It’s _____ orange.

A. an; an
B. an ; the
C. an ; /
D. / ; an

What ___ interesting story it is!

A. a
B. an
C. the
D. /

Even while he was in ___ hospital, he went on writing songs.

A. a
B. an
C. the
D. /

____ young must look after ___ old.

A. The ; a
B. The ; the
C. A ; a
D. A ; the

—Have you seen ___ pencil? I left it here this morning.—Is it ___ red one ? I saw it.

A. a ; the
B. the ; the
C. the ; a
D. a ; a

用a或an填空:1. ____ honest boy 2. ____ ugly man 3. ____ useful tool4. ____ one-act play5. ____ uncle6. ____ uniform7. ____ university 8. _____ hour9. ____ umbrella10. _____ interesting story

_______ sun rises in _______ east.

Washington is _______ capital of _______ USA.

It's too hot.Open _______ door,please.

They passed our school _______ day before yesterday.