He used to be _______ teacher but later he turned _______ writer.
A. a；a
B. a；the
C. ／；a
D. a；／
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His father is _______ English teacher. He works in our school.
A. a
B. an
C. the
D. ／
Is he _______American boy ？
A. an
B. a
C. one
D. ／
Australia is _______ English-speaking country.
A. a
B. an
C. the
D. ／
This is _______ apple. It’s _______big apple.
A. an；a
B. a；the
C. a；an
D. an；the
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