The dog had _____ serious toothache so its owner took it to _____ animal doctor. 
#32603
A
an, an
B
the, /
C
a, /
D
a, an
推荐题目
I have _____salad for lunch. 
#33268
A
a
B
the
C
an
D
some
I have _____ book. It’s ______ English book.
#33793
A
a; a
B
a; an
C
an; a
D
an; an
It is ________ eraser. 
#34687
A
a
B
/
C
an
D
two