语法词汇练习 语法大全 语法详解 英语听力 
Everyone knows that _____ sun is in the center of the solar system（太阳系）
#33645
A
a
B
an
C
the
D
/
下一题
推荐题目
--- Do you often ride _______ bike to school, Tom?--- No. I usually come to school by ______ bus.
#33386
A
a, a
B
a, the
C
/, /
D
a, /
Ming Ming is ________ Chinese boy.
#34015
A
a
B
an
C
the
D
/
Mary writes       e-mail to David. She found        keys.
#33050
A
a; him
B
an; his
C
a; her
D
an; he
—What’s this in the photo?—It’s    UFO.I took the photo.
#33383
A
a
B
an
C
the
D
/
He is _____ Australia boy.
#33927
A
an
B
a
C
the
D
\