招贤纳士
There is _____ elephant in the zoo. _____ elephant is from Africa.       [     ]
A、a; The
B、an; The
C、/ ; An
D、a; An
— What's wrong with you?   
— I caught ______ bad cold and had to stay in ______ bed. 
[     ]
A、a; /
B、a; the
C、a; a
D、the; the
My sister is       girl.[     ]
A、a 11-year-old
B、an 11-year-old
C、a 11 years old
D、an 11 years old
Is there ______ "X" in the word "box"? [     ]
A、a
B、 an
C、 the
D、 only
There is _____ egg on the table. _____ egg is very big. 
[     ]
A、a; A
B、an; An
C、a; The
D、an; The
I think English is ______ interesting language.   [     ]
A、the
B、an
C、a
D、/
There is _______ big desk in our classroom. _______desk is for our teacher.
[      ]
A、a, The
B、a, A
C、the, The
D、an, A
The man said he saw           UFO           hour ago. [     ]
A、a an
B、an a
C、a a
D、the the
—What's that?
—It's _____ ID card.
[     ]
A、my a
B、an
C、the
D、a
There is ______"R" in "red".
[     ]
A、a
B、an
C、the
D、/