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Everyone knows that _____ sun is in the center of the solar system（太阳系）
#33645
A
a
B
an
C
the
D
/
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______ girl in red is ______ friend of Mary’s．
#34221
A
The, the
B
The, a
C
A, a
D
A, the
---Tony is_____active boy,but he has_____unhealthy lifestyle. - --Yes,you are right.    
#32974
A
a;a
B
an;an
C
an;a
D
a;an
This is ______ banana and that is _______ orange.
#32610
A
a; a
B
a; an
C
an; an
D
an; a
Do you eat _____ egg for breakfast every day?
#34107
A
a
B
an
C
the
D
/
----What about going out for ______ walk this weekend?----Good idea.I love getting close to _____nature.
#32212
A
an,/
B
/,the
C
a, the
D
a,/