招贤纳士
— What color is it?    
— It's _____ green. It's _____ green pencil.  
[     ]
A、a; a
B、/; a
C、a; an
D、an; a
This is _____  alarm clock.   
[     ]
A、a
B、the
C、an
D、/
— What's this in English?   
— It's _____  clock.    
[     ]
A、a
B、 an
C、 the
D、/
I have _____ aunt. She is a teacher.   
[     ]
A、an
B、a
C、the
D、/
The students have to wear _____ uniform at school every day.
[     ]
A、the
B、a
C、an
D、/
— Is this_____ English car ?
— No, it's______Japanese car.
[     ]
A、a; a
B、a; an
C、an; an
D、an; a
This is ________ key. That's ________ orange.
[     ]
A、a, a
B、an, an
C、a, an
D、an, a
Is it ________ African elephant?
[      ]
A、a
B、an
C、the
D、不填
Old Brown often goes for ______ walk with his dog after supper.
[     ]
A、a
B、an
C、the
D、/
— Is it ____ apple?
— No, it isn't. [     ]
A、a
B、an
C、the
D、/