Everyone knows that _____ sun is in the center of the solar system（太阳系）
#33645
A
a
B
an
C
the
D
/
推荐题目
_____ORBIS doctor who got here yesterday needed _______ X-ray machine to examine his patients.
#34153
A
The; a
B
The; an
C
An; a
D
An; an
Red and white are good match, as powerful red balances calm white.
#33021
A
a, /, /
B
/, a, a
C
the, a, /
D
a, the, the
It is useless book to children. Put it into left drawer and never read it.
#34662
A
a; a
B
a; the
C
an; the
D
an; a